{"id":12964,"date":"2025-09-25T09:31:46","date_gmt":"2025-09-25T08:31:46","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=12964"},"modified":"2026-01-16T08:33:42","modified_gmt":"2026-01-16T08:33:42","slug":"mode-of-nutrition-in-plant-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/09\/25\/mode-of-nutrition-in-plant-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Mode of nutrition in plant Top 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">1. The mode of nutrition in green plants is ___________.<\/mark><\/strong><br>A) Heterotrophic<br>B) Autotrophic<br>C) Parasitic<br>D) Saprophytic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Green plants use chlorophyll and sunlight to make food (photosynthesis).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">2. Autotrophic nutrition involves<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><\/mark><\/strong><br>A) Direct absorption of food<br>B) Photosynthesis or chemosynthesis<br>C) Feeding on dead matter<br>D) Dependence on host<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Autotrophic nutrition is a process where organisms (autotrophs) synthesize their own food from simple inorganic substances like carbon dioxide and water.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">3. The primary source of energy for photosynthesis is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) ATP<br>B) Sunlight<br>C) Glucose<br>D) Water<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Sunlight is the ultimate and primary source of energy for photosynthesis. This light energy is captured by photosynthetic pigments and converted into chemical energy to drive the entire process.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">4. Essential pigment for photosynthesis<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Carotene<br>B) Xanthophyll<br>C) Chlorophyll<br>D) Anthocyanin<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Chlorophyll is considered the essential (or primary) pigment for photosynthesis because it is the only pigment capable of directly converting light energy into chemical energy.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">5. The green color of plants is due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Xanthophyll<br>B) Carotenoids<br>C) Chlorophyll<br>D) Starch<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  The green color of plants is primarily due to chlorophyll, the main pigment found in the chloroplasts of plant cells. This pigment is vital for photosynthesis because it absorbs light energy from the sun.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6. Photosynthesis occurs in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Mitochondria<br>B) Chloroplasts<br>C) Ribosomes<br>D) Nucleus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Chloroplasts contain the pigment chlorophyll, which captures light energy to power the production of food.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7. Which is the first stable product of photosynthesis in C3 plants?<br><\/mark><\/strong>A) Pyruvate<br>B) Phosphoglycerate (PGA)<br>C) Oxaloacetate<br>D) Malate<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  In C3 plants, the first stable product of the dark reaction (the Calvin Cycle) is 3-phosphoglyceric acid, commonly abbreviated as 3-PGA. Because this compound contains three carbon atoms, the pathway is named the C3 cycle.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">8. In C4 plants, first stable product of photosynthesis is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Pyruvate<br>B) Oxaloacetate<br>C) PGA<br>D) Malate<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  In C4 plants (such as maize, sugarcane, and sorghum), the first stable product of carbon fixation is oxaloacetic acid (OAA). Because this molecule contains four carbon atoms, the pathway is named the C4 cycle (also known as the Hatch-Slack pathway).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9. Raw materials for photosynthesis are<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) CO\u2082 + H\u2082O<br>B) O\u2082 + H\u2082O<br>C) Starch + O\u2082<br>D) Proteins + H\u2082O<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Photosynthesis is the process by which green plants manufacture their own food. To do this, they require specific &#8220;ingredients&#8221; or raw materials from their environment.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">10. The gas released during photosynthesis is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) CO\u2082<br>B) O\u2082<br>C) H\u2082<br>D) N\u2082<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  During the process of photosynthesis, plants release oxygen gas ($O_2$) as a byproduct. This gas is vital for the survival of almost all aerobic organisms on Earth, including humans.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">11. CO\u2082 enters plant leaves through<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Cuticle<br>B) Lenticels<br>C) Stomata<br>D) Epidermis<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Carbon dioxide ($CO_2$) enters plant leaves primarily through stomata (singular: stoma). These are microscopic pores located mostly on the underside of leaves, acting as the &#8220;mouths&#8221; of the plant for gas exchange.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">12. Which law of limiting factor applies to photosynthesis?<br><\/mark><\/strong>A) Blackman\u2019s Law<br>B) Mendel\u2019s Law<br>C) Hardy-Weinberg Law<br>D) Boyle\u2019s Law<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Blackman\u2019s Law of Limiting Factors states that when a physiological process (like photosynthesis) is influenced by multiple factors, its rate is determined by the factor that is in the shortest supply (the &#8220;slowest&#8221; factor).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">13. Site of light reaction of photosynthesis<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Stroma<br>B) Thylakoid membrane<br>C) Mitochondria<br>D) Ribosome<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The light reactions (also known as light-dependent reactions) are the first stage of photosynthesis. They occur specifically within the thylakoid membranes of the chloroplast, where light-absorbing pigments like chlorophyll are located.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">14. Site of dark reaction of photosynthesis<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Stroma<br>B) Thylakoid<br>C) Cytoplasm<br>D) Nucleus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The dark reaction (also known as the light-independent reaction or the Calvin Cycle) is the second phase of photosynthesis. It takes place in the stroma, which is the colorless, protein-rich fluid that fills the space inside the chloroplast, surrounding the thylakoid stacks.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">15. End products of photosynthesis are<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Glucose + O\u2082<br>B) Starch + CO\u2082<br>C) Proteins + H\u2082O<br>D) Glucose + N\u2082<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The end products of photosynthesis are glucose (a simple sugar\/carbohydrate) and oxygen gas. During this process, plants convert solar energy into chemical energy stored in the bonds of glucose, while releasing oxygen as a vital byproduct.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">16. Photosynthesis equation was first given by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Calvin<br>B) Van Niel<br>C) Blackman<br>D) Mayer<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Van Niel\u2019s work with purple and green sulfur bacteria led him to realize that photosynthesis is a light-dependent redox reaction.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">17. In photosynthesis, water acts as<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Electron donor<br>B) Electron acceptor<br>C) Energy carrier<br>D) Pigment<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  In the light-dependent reactions of photosynthesis, water H2O  serves as the primary electron donor. This role is critical for maintaining the flow of energy that ultimately produces food for the plant.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">18. Which light is most effective in photosynthesis?<br><\/mark><\/strong>A) Green<br>B) Yellow<br>C) Red and blue<br>D) Infrared<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  While plants look green to our eyes, they actually use red and blue light most efficiently to power photosynthesis. This is because the primary pigment, chlorophyll, absorbs these specific wavelengths of light while reflecting others.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">19. Photosynthetic unit is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) PSI<br>B) PSII<br>C) Quantasome<br>D) Chloroplast<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  A quantasome is considered the functional unit of photosynthesis. It is a tiny particle found on the thylakoid membrane that contains the necessary pigments and components to perform the initial photochemical act of capturing light.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">20. Calvin cycle was discovered by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Blackman<br>B) Calvin<br>C) Mayer<br>D) Hill<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Calvin cycle (also known as the C3 cycle or the &#8220;dark reaction&#8221;) was discovered by the American biochemist Melvin Calvin, along with Andrew Benson and James Bassham, in the late 1940s.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">21. The Hill reaction shows that oxygen is evolved from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) CO\u2082<br>B) H\u2082O<br>C) Glucose<br>D) Sunlight<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Hill reaction, discovered by Robert Hill in 1937, was a landmark experiment that proved oxygen released during photosynthesis comes from the splitting of water,not from carbon dioxide as previously thought.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">22. CAM plants fix CO\u2082 at night using<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) PEP carboxylase<br>B) Rubisco<br>C) ATP synthase<br>D) Malate dehydrogenase<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  PEP carboxylase (also known as PEPCase) is the enzyme that initially fixes CO\u2082 in CAM plants during the night.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">23. Which plants minimize photorespiration?<br><\/mark><\/strong>A) C3 plants<br>B) C4 plants<br>C) CAM plants only<br>D) Both C4 and CAM<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D  <\/b><BR>\n<b>Explanation:<\/b>  Both C4 and CAM plants have evolved specialized mechanisms to minimize photorespiration, a wasteful process where the enzyme RuBisCO binds with Oxygen,instead of Carbon Dioxide.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">24. Dark reaction is called so because<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) It occurs at night only<br>B) It does not require light directly<br>C) It occurs in absence of chloroplast<br>D) It needs darkness<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The name &#8220;dark reaction&#8221; is actually a bit of a misnomer in modern biology. It doesn&#8217;t mean the reaction requires darkness or that it only happens at night; it simply means that the chemical steps themselves do not use photons (light energy) to proceed.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">25. End product of light reaction is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) ATP + NADPH<br>B) Glucose<br>C) Pyruvate<br>D) CO\u2082<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The light-dependent reactions (or simply the light reactions) are the first phase of photosynthesis. Their primary goal is to convert solar energy into chemical energy that can be used later to build sugar.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">26. Plants that cannot prepare their own food and depend on others are<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Autotrophic<br>B) Heterotrophic<br>C) Symbiotic<br>D) Epiphytic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Heterotrophic plants depend on other organisms for nutrition.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">27. The parasitic mode of nutrition is seen in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Cuscuta<br>B) Maize<br>C) Mango<br>D) Sunflower<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Cuscuta is a total stem parasite lacking chlorophyll.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">28. A plant that depends partly on itself and partly on host is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Total parasite<br>B) Partial parasite<br>C) Saprophyte<br>D) Symbiont<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Partial parasites like mistletoe photosynthesize but take water\/minerals from host.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">29. Which of the following is a total root parasite?<br><\/mark><\/strong>A) Orobanche<br>B) Viscum<br>C) Loranthus<br>D) Striga<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Orobanche completely depends on host roots for food and water.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">30. Mistletoe (Viscum) is an example of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Total parasite<br>B) Partial stem parasite<br>C) Total root parasite<br>D) Saprophyte<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Mistletoe contains chlorophyll but absorbs water\/minerals from host.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">31. Saprophytic plants obtain food from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Living hosts<br>B) Dead and decaying matter<br>C) Symbiotic fungi<br>D) Photosynthesis<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Saprophytic plants (or more accurately, mycoheterotrophs) obtain their nutrients from dead organic material. Since they lack chlorophyll, they cannot perform photosynthesis and must rely on a unique &#8220;recycling&#8221; method for survival.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">32. Example of saprophytic plant is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Monotropa<br>B) Cuscuta<br>C) Loranthus<br>D) Viscum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Saprophytic plants (or more accurately, mycoheterotrophs) obtain their nutrients from dead organic material. Since they lack chlorophyll, they cannot perform photosynthesis and must rely on a unique &#8220;recycling&#8221; method for survival.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">33. Symbiotic nutrition is seen in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Monotropa<br>B) Lichens<br>C) Cuscuta<br>D) Orobanche<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Symbiosis occurs between algae and fungi.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">34. Algal partner in lichens provides<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Minerals<br>B) Water<br>C) Carbohydrates (food)<br>D) Support<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Lichens are a fascinating example of a symbiotic relationship (specifically mutualism) between a fungus (the mycobiont) and a photosynthetic partner (the photobiont), which is usually a green alga or a cyanobacterium.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">35. Fungal partner in lichens provides<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Food<br>B) Water and minerals<br>C) Chlorophyll<br>D) Oxygen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  A lichen is a single life form that is actually a symbiotic partnership between two (or sometimes more) different organisms.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">36. Mode of nutrition in Rhizobium is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Autotrophic<br>B) Parasitic<br>C) Symbiotic<br>D) Saprophytic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Rhizobium forms symbiosis with legume roots to fix nitrogen.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">37. Haustoria are structures found in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Saprophytes<br>B) Parasites<br>C) Symbionts<br>D) Autotrophs<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Specialized absorbing roots in parasites penetrate host tissues.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">38. A mycoheterotrophic plant that is achlorophyllous is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Monotropa<br>B) Sunflower<br>C) Mango<br>D) Wheat<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Monotropa uniflora, commonly known as the Ghost Pipe or Indian Pipe, is a unique plant that breaks the typical rules of botany.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">39. Symbiotic association of fungi and roots of higher plants is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Lichen<br>B) Mycorrhiza<br>C) Root nodule<br>D) Haustoria<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The term comes from the Greek words &#8220;mykes&#8221; (fungus) and &#8220;rhiza&#8221; (root).\n This association is a classic example of mutualism, where both the fungus and the plant benefit from each other&#8217;s presence.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">40. Example of obligate parasite in plants<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Cuscuta<br>B) Monotropa<br>C) Lichens<br>D) Mango<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  An obligate parasite (also known as a holoparasite) is an organism that cannot complete its life cycle without a host. In the case of Cuscuta, it is a total stem parasite that is completely dependent on its host for survival.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">41. Example of facultative parasite<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Orobanche<br>B) Monotropa<br>C) Viscum<br>D) Mistletoe<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  It can photosynthesize but also depends on host.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">42. Insectivorous plants mainly trap insects to obtain<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Carbohydrates<br>B) Nitrogen<br>C) Water<br>D) Oxygen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  They are autotrophic but supplement nitrogen via insect digestion.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">43. A symbiotic plant relationship where both partners benefit is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Parasitism<br>B) Mutualism<br>C) Commensalism<br>D) Saprophytism<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  mutualism is a type of symbiotic relationship where both organisms involved receive a benefit. It is often referred to as a &#8220;win-win&#8221; interaction.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">44. Which of the following is a hemiparasite (partial parasite)?<br><\/mark><\/strong>A) Viscum<br>B) Cuscuta<br>C) Orobanche<br>D) Monotropa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Viscum (commonly known as Mistletoe) is a hemiparasite (or partial parasite). This means it is a &#8220;half-parasite&#8221; that still performs some of its own work but steals the rest from a host.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">45. The nutrition mode in orchids is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Autotrophic<br>B) Saprophytic<br>C) Epiphytic (with mycorrhizal association)<br>D) Parasitic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Orchids are a diverse family of plants, but the majority of tropical orchids grow as epiphytes (plants that grow on trees for support). Their nutrition is highly specialized because they live in nutrient-poor environments above the ground.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">46. Which of the following is a non-green mycoheterotroph?<br><\/mark><\/strong>A) Mushroom<br>B) Monotropa<br>C) Cuscuta<br>D) Mango<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Monotropa uniflora (commonly known as the Ghost Pipe or Indian Pipe) is the classic example of a non-green mycoheterotroph.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">47. Example of root parasite in monocots<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Striga<br>B) Cuscuta<br>C) Loranthus<br>D) Monotropa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Striga, commonly known as Witchweed, is a notorious root parasite that primarily targets monocotyledonous crops in the grass family (Poaceae), such as maize, sorghum, millet, rice, and sugarcane.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">48. Loranthus is a<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Total root parasite<br>B) Partial stem parasite<br>C) Saprophyte<br>D) Symbiont<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Presence of Chlorophyll: Loranthus has green, leathery leaves. This allows the plant to perform photosynthesis and manufacture its own organic food (carbohydrates).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">49. Symbiotic nitrogen fixation in leguminous plants is carried out by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Azotobacter<br>B) Rhizobium<br>C) Clostridium<br>D) Nitrosomonas<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Rhizobium is a soil-dwelling bacterium that forms a famous symbiotic relationship with plants in the legume family (such as peas, beans, clover, and alfalfa).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">50. Which heterotrophic plants lack chlorophyll completely?<br><\/mark><\/strong>A) Cuscuta, Orobanche, Monotropa<br>B) Viscum, Loranthus<br>C) Mango, Pea<br>D) Wheat, Rice<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  These three plants are examples of holoparasites or mycoheterotrophs that have completely lost their chlorophyll. Because they cannot perform photosynthesis, they do not have the green color common to most plants.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">51. Insectivorous plants are generally found in soils deficient in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Water<br>B) Nitrogen<br>C) Carbon dioxide<br>D) Oxygen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Insectivorous plants supplement nitrogen by digesting insects.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">52. Pitcher plant (Nepenthes) is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Saprophytic<br>B) Insectivorous<br>C) Symbiotic<br>D) Epiphytic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Its modified leaf forms a pitcher to trap insects.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">53. The leaf modification in pitcher plant is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Phyllode<br>B) Pitcher (leaf lamina modified)<br>C) Spine<br>D) Tendril<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  In the pitcher plant (such as Nepenthes), different parts of the leaf are highly specialized to perform specific roles for catching insects. The &#8220;pitcher&#8221; itself is a dramatic transformation of the leaf lamina (the flat, green blade of a typical leaf).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">54. Venus flytrap (Dionaea muscipula) traps insects by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Sticky secretion<br>B) Snap mechanism of leaf lobes<br>C) Pitcher with fluid<br>D) Tentacles with glue<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Venus flytrap (Dionaea muscipula) is famous for its &#8220;active&#8221; trapping mechanism, which is one of the fastest movements in the plant kingdom.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">55. Drosera (sundew) traps insects by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Snap traps<br>B) Sticky glandular hairs<br>C) Pitfall trap<br>D) Suction trap<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Drosera, commonly known as the Sundew, uses a &#8220;flypaper&#8221; trapping mechanism. Its name comes from the glistening drops of mucilage on its leaves, which look like morning dew in the sunlight.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">56. Utricularia (bladderwort) captures insects by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Snap mechanism<br>B) Pitfall trap<br>C) Suction bladders<br>D) Sticky hairs<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Utricularia, commonly known as Bladderwort, possesses what is considered the most sophisticated and fastest trapping mechanism in the plant kingdom. It uses a highly specialized vacuum-driven suction trap.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">57. Aldrovanda is a\/an<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Aquatic insectivorous plant<br>B) Parasitic plant<br>C) Saprophyte<br>D) Symbiont<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Aldrovanda vesiculosa, commonly known as the Waterwheel plant, is a fascinating rootless, free-floating aquatic plant.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">58. Pinguicula (butterwort) traps insects using<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Snap lobes<br>B) Pitcher<br>C) Sticky leaves<br>D) Suction bladder<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Pinguicula, commonly known as Butterwort, is a genus of carnivorous plants that uses a &#8220;flypaper&#8221; trapping mechanism. The name &#8220;Butterwort&#8221; comes from the greasy, buttery feel of its leaves, which is caused by the sticky secretions they produce.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">59. Primary purpose of insect-trapping in insectivorous plants is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Photosynthesis<br>B) Nitrogen supplementation<br>C) Pollination<br>D) Protection<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  While insectivorous (carnivorous) plants are green and perform photosynthesis to create energy (sugars), they &#8220;eat&#8221; insects to solve a specific nutritional problem.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">60. Mycorrhiza is a symbiotic association between<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Algae and fungi<br>B) Fungi and roots of higher plants<br>C) Bacteria and fungi<br>D) Two plant roots<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  the word Mycorrhiza literally translates to &#8220;fungus-root.&#8221; This relationship is a classic example of mutualism, where both the plant and the fungus help each other survive.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">61. Mycorrhizal association helps plants mainly in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Nitrogen fixation<br>B) Phosphorus absorption<br>C) Oxygen transport<br>D) Carbon assimilation<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  While mycorrhizal fungi help with the uptake of various micronutrients and water, their most critical and well-known role is the mobilization and transport of phosphorus to the plant.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">62. Example of plant with mycorrhiza<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Pinus<br>B) Mustard<br>C) Wheat<br>D) Maize<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  While many plants form mycorrhizal associations, members of the family Pinaceae (like Pinus, Fir, and Spruce) are famous for their obligatory relationship with Ectomycorrhizae\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">63. Lichens are indicators of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Air pollution (SO\u2082)<br>B) Water pollution<br>C) Soil fertility<br>D) Mineral deficiency<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Lichens are among the most sensitive bioindicators in nature. They are often called &#8220;nature\u2019s air quality monitors&#8221; because their presence, absence, or health directly reflects the cleanliness of the surrounding air.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">64. In lichens, fungal partner is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Phycobiont<br>B) Mycobiont<br>C) Symbiont<br>D) Autotroph<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  This term refers specifically to the fungal partner in the symbiotic association of a lichen. The prefix &#8220;myco-&#8221; relates to fungi.The fungus provides the structure, protection, and absorbs water and minerals for the organism. \n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">65. In lichens, algal partner is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Phycobiont<br>B) Mycobiont<br>C) Symbiont<br>D) Epiphyte<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The algal partner in a lichen is called the phycobiont.The term is derived from &#8220;phyco,&#8221; which relates to algae.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">66. The association of algae and fungi in lichens is an example of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Mutualism<br>B) Commensalism<br>C) Parasitism<br>D) Saprophytism<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  the relationship between the algae (phycobiont) and the fungi (mycobiont) in a lichen is primarily classified as mutualism because both partners benefit significantly from living together.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">67. The nutrition mode in Rafflesia is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Autotrophic<br>B) Saprophytic<br>C) Total root parasitic<br>D) Partial stem parasitic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Rafflesia (known for having the largest individual flower in the world) is a holoparasite\u2014a total parasite that has completely lost the ability to photosynthesize.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">68. The nutrition mode in Santalum (sandalwood tree) is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Autotrophic only<br>B) Partial root parasitic<br>C) Total stem parasitic<br>D) Saprophytic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Santalum album, commonly known as the Sandalwood tree, is a hemiparasite (partial parasite). This means that while it is a green tree capable of making its own food, it still relies on other plants for specific resources.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">69. Example of insectivorous aquatic plant<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Utricularia<br>B) Drosera<br>C) Nepenthes<br>D) Dionaea<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Utricularia (commonly known as Bladderwort) is the only one in this list that is primarily aquatic.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">70. Mycorrhizal fungi increase plant resistance against<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Drought<br>B) Pathogens<br>C) Soil salinity<br>D) All of these<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D <\/b><BR>\n<b>Explanation:<\/b>  While the most famous role of mycorrhizal fungi is phosphorus absorption, they act as a &#8220;biological shield&#8221; that significantly enhances a plant&#8217;s ability to survive various environmental stresses.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">71. Dodder (Cuscuta) is a<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Total stem parasite<br>B) Partial root parasite<br>C) Symbiont<br>D) Saprophyte<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Cuscuta, commonly known as Dodder or Amarbel, is one of the most well-known examples of a holoparasite (total parasite).Unlike the Sandalwood tree or the Mistletoe, it has no green leaves and cannot perform photosynthesis.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">72. Saprophytic mode of nutrition in fungi involves <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Photosynthesis<br>B) Extracellular digestion of organic matter<br>C) Symbiotic nitrogen fixation<br>D) Trap mechanism<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Saprophytic fungi (like mushrooms, bread mold, and yeast) are the nature&#8217;s primary decomposers. Because they cannot move to find food or make their own through photosynthesis, they have evolved a unique &#8220;absorptive&#8221; way of eating.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">73. Some orchids depend on fungi for nutrients. This relation is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Parasitism<br>B) Mutualism (mycorrhiza)<br>C) Saprophytism<br>D) Predation<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  This is a specific type of symbiotic relationship known as Orchid Mycorrhiza. While it is technically a form of mutualism, it is one of the most unique and complex examples in the plant kingdom because the &#8220;balance of power&#8221; shifts throughout the orchid&#8217;s life.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">74. Coralloid roots of Cycas show symbiosis with<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><\/mark><\/strong><br>A) Blue-green algae (Anabaena)<br>B) Rhizobium<br>C) Mycorrhizal fungi<br>D) Actinomycetes<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Cycas is a gymnosperm that produces two types of roots: normal taproots and specialized Coralloid roots. These roots get their name because they are dichotomously branched and resemble sea corals.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">75. Insectivorous plants are mostly found in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Nitrogen-rich soils<br>B) Marshy, nitrogen-poor soils<br>C) Desert soils<br>D) Sandy coastal soils<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Insectivorous plants have evolved their unique hunting abilities as an adaptation to survive in &#8220;difficult&#8221; neighborhoods where most other plants would starve.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">76. Plants that derive water and minerals from host but make their own food are<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Total parasites<br>B) Partial parasites<br>C) Saprophytes<br>D) Autotrophs<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Examples include Viscum and Loranthus.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">77. The mode of nutrition in fungi is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Autotrophic<br>B) Saprophytic or parasitic<br>C) Holozoic<br>D) Symbiotic only<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The majority of fungi are saprophytes. They live on dead and decaying organic matter such as fallen leaves, animal remains, or rotting wood.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">78. Insectivorous plants supplement their nutrition mainly for<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Carbohydrates<br>B) Proteins<br>C) Nitrogen and minerals<br>D) Oxygen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  While insectivorous plants are green and produce their own &#8220;food&#8221; (carbohydrates) through photosynthesis, they live in environments where the soil is extremely deficient in life-sustaining nutrients.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">79. Which plant is called the &#8220;corpse flower&#8221; and is a parasitic plant?<br><\/mark><\/strong>A) Rafflesia<br>B) Nepenthes<br>C) Drosera<br>D) Monotropa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  It is a total root parasite with the world\u2019s largest flower.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">80. Which heterotrophic plant is also known as the &#8220;Indian pipe&#8221;?<br><\/mark><\/strong>A) Orobanche<br>B) Monotropa<br>C) Striga<br>D) Viscum<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  A saprophytic\/mycoheterotrophic plant growing in dark forest soils.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">81. Nitrogen-fixing cyanobacteria associated with <em>Cycas<\/em> roots are<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Nostoc and Anabaena<br>B) Rhizobium<br>C) Azotobacter<br>D) Clostridium<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  In Cycas, specialized roots called coralloid roots host these nitrogen-fixing cyanobacteria (also known as blue-green algae).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">82. Which of the following is a root parasite in cereals?<br><\/mark><\/strong>A) Striga<br>B) Orobanche<br>C) Cuscuta<br>D) Monotropa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Striga, commonly known as Witchweed, is a devastating root parasite that primarily targets cereal crops such as maize, sorghum, millet, rice, and sugarcane, especially in tropical and subtropical regions.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">83. Epiphytic orchids absorb water through<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Haustoria<br>B) Velamen tissue in aerial roots<br>C) Root nodules<br>D) Symbiotic fungi only<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Epiphytic orchids, which grow on other plants without taking nutrients from them, have developed a specialized structure to survive high above the ground where there is no soil.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">84. Which of the following is a non-green parasitic angiosperm?<br><\/mark><\/strong>A) Loranthus<br>B) Viscum<br>C) Cuscuta<br>D) Orchid<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  To be a non-green parasitic angiosperm, a plant must be a holoparasite. This means it lacks chlorophyll and cannot perform photosynthesis, making it 100% dependent on its host for both water and organic food (sugars).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">85. Which mode of nutrition is shown by lichens?<br><\/mark><\/strong>A) Parasitic<br>B) Symbiotic mutualism<br>C) Epiphytic<br>D) Saprophytic<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Lichens are not a single organism, but a composite life form consisting of two or more distinct partners living in a tight, mutually beneficial relationship.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">86. Which among the following is a carnivorous plant with snap trap?<br><\/mark><\/strong>A) Nepenthes<br>B) Drosera<br>C) Dionaea (Venus flytrap)<br>D) Utricularia<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  The snap trap is a rapid, active movement unique to a very small number of plants, most famously the Venus flytrap.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">87. Sandalwood tree (Santalum album) is___________.<\/mark><\/strong><br>A) Total stem parasite<br>B) Partial root parasite<br>C) Saprophyte<br>D) Epiphyte<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Although the sandalwood tree is a large, green tree with leaves, it cannot complete its life cycle successfully without connecting to the roots of other nearby plants.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">88. The &#8220;Indian telegraph plant&#8221; (Desmodium) shows<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Saprophytic nutrition<br>B) Insectivory<br>C) Movement of lateral leaflets<br>D) Parasitism<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  A special adaptation, not related to photosynthesis directly.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">89. Which plant uses sticky leaves to trap insects?<br><\/mark><\/strong>A) Nepenthes<br>B) Drosera<br>C) Dionaea<br>D) Pinguicula<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D  <\/b><BR>\n<b>Explanation:<\/b>  Pinguicula (Butterwort) is also a flypaper trap, but its leaves are flat and greasy (like butter), with tiny invisible sticky glands rather than long tentacles.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">90. Symbiotic nitrogen fixation occurs in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Mustard<br>B) Pea<br>C) Rice<br>D) Wheat<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Root nodules with Rhizobium.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">91. Which mode of nutrition is exhibited by Azolla (fern) with Anabaena?<br><\/mark><\/strong>A) Parasitic<br>B) Symbiotic<br>C) Saprophytic<br>D) Carnivorous<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The relationship between the water fern Azolla and the cyanobacteria Anabaena azollae is one of the most efficient and famous examples of mutualistic symbiosis in the plant kingdom.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">92. Example of a total root parasite in dicots<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Striga<br>B) Orobanche<br>C) Viscum<br>D) Monotropa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Orobanche, commonly known as Broomrape, is a classic example of a total root parasite (holoparasite) that primarily targets dicot\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>93. Which plant family has many members that are insectivorous?<br><\/strong><\/mark>A) Orchidaceae<br>B) Droseraceae<br>C) Poaceae<br>D) Fabaceae<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  the Droseraceae family is the most well-known in introductory biology because it contains some of the most iconic &#8220;active&#8221; insect-trapping genera.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">94. The absorptive organ in parasitic plants is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Haustoria<br>B) Velamen<br>C) Root hair<br>D) Rhizoid<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  In parasitic plants, the specialized organ that penetrates the host&#8217;s tissue to absorb water, minerals, and nutrients is called a haustorium (plural: haustoria).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">95. Example of facultative symbiosis is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/mark><\/strong>A) Rhizobium in legumes<br>B) Algae and fungi in lichens<br>C) Striga in cereals<br>D) Monotropa in forests<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  A facultative symbiosis is a relationship where the partners can live together for mutual benefit but are also capable of surviving independently in the environment.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">96. Which plant is a partial stem parasite?<br><\/mark><\/strong>A) Loranthus<br>B) Orobanche<br>C) Cuscuta<br>D) Monotropa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  A partial stem parasite (also known as a hemiparasite) is a plant that contains chlorophyll and can perform photosynthesis but depends on its host for water and essential minerals.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>97. Carnivorous plants are generally found in soils<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><br><\/strong><\/mark>A) Poor in nitrogen<br>B) Poor in water<br>C) Poor in carbon dioxide<br>D) Rich in nitrogen<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Carnivorous plants (also known as insectivorous plants) are usually found in habitats like bogs, fens, and marshes. These areas have waterlogged soils that are highly acidic and low in available nutrients, particularly nitrogen.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">98. Albugo (causing white rust) obtains food by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><\/mark><\/strong><br>A) Autotrophy<br>B) Parasitism<br>C) Saprophytism<br>D) Symbiosis<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Albugo (specifically Albugo candida) is an obligate plant pathogen that causes a disease known as white rust (or white blisters) on cruciferous plants like mustard, radish, and cabbage.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">99. The velamen tissue in orchids helps in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><\/mark><\/strong><br>A) Photosynthesis<br>B) Absorption of atmospheric moisture<br>C) Food conduction<br>D) Seed dispersal<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The velamen is a specialized, multi-layered epidermis found on the aerial roots of epiphytic orchids (orchids that grow on trees rather than in soil).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>100. The best example of plant\u2013fungus symbiosis enhancing mineral uptake is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">___________.<\/mark><\/strong><\/strong><\/mark><br>A) Mycorrhiza<br>B) Root hairs<br>C) Root nodules<br>D) Haustoria<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Mycorrhiza (literally meaning &#8220;fungus-root&#8221;) is the most prominent example of a mutualistic symbiotic relationship between a fungus and the roots of a higher plant, specifically designed to enhance nutrient and mineral absorption.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. The mode of nutrition in green plants is ___________.A) HeterotrophicB) AutotrophicC) ParasiticD) Saprophytic Show Answer Answer: B Explanation: Green plants use chlorophyll and sunlight to make food (photosynthesis). 2. Autotrophic nutrition involves___________.A) Direct absorption of foodB) Photosynthesis or chemosynthesisC) Feeding on dead matterD) Dependence on host Show Answer Answer: B Explanation: Autotrophic nutrition is<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[16245,16435,16443,16151,16133,16155,16154,16158,16139,16271,16402,16403,16135,15566,16436,16441,4029,16156,16439,16437,16438,16401,16364,16261,16052,16265,16134,16442,16132,16440,16140],"class_list":{"0":"post-12964","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-biology","7":"tag-absorption-of-nutrients","8":"tag-autotrophic-nutrition","9":"tag-biological-processes","10":"tag-biology-learning","11":"tag-biology-mcqs","12":"tag-biology-preparation-material","13":"tag-biology-questions-and-answers","14":"tag-biology-revision","15":"tag-biology-study-material","16":"tag-botany-quiz","17":"tag-carbon-fixation","18":"tag-chlorophyll","19":"tag-competitive-exam-biology","20":"tag-energy-conversion","21":"tag-heterotrophic-nutrition","22":"tag-insectivorous-plants","23":"tag-mcqs-adda","24":"tag-mcqs-for-biology-exam","25":"tag-mode-of-nutrition","26":"tag-nutrition-in-plants","27":"tag-parasitic-plants","28":"tag-photosynthesis","29":"tag-plant-adaptation","30":"tag-plant-kingdom","31":"tag-plant-nutrition","32":"tag-plant-physiology","33":"tag-psc-biology-mcqs","34":"tag-saprophytic-plants","35":"tag-ssc-biology-mcqs","36":"tag-symbiotic-nutrition","37":"tag-upsc-biology-mcqs"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=12964"}],"version-history":[{"count":105,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12964\/revisions"}],"predecessor-version":[{"id":37710,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12964\/revisions\/37710"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=12964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=12964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=12964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}