{"id":12975,"date":"2025-09-25T10:09:10","date_gmt":"2025-09-25T09:09:10","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=12975"},"modified":"2026-01-19T08:51:51","modified_gmt":"2026-01-19T08:51:51","slug":"plant-tissue-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/09\/25\/plant-tissue-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Plant tissue 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. Study of plant tissues 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) Histology<br>B) Cytology<br>C) Morphology<br>D) Taxonomy<\/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>  Histology deals with microscopic study of 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\">2. Plant tissues are broadly classified into<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) Xylem and phloem<br>B) Meristematic and permanent<br>C) Simple and complex<br>D) Collenchyma and sclerenchyma<\/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 the fundamental classification.\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. Meristematic tissues are characterized 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) Thin walls, dense cytoplasm, no vacuoles<br>B) Thick walls, dead cells<br>C) Lignified cells<br>D) Large vacuoles<\/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>  Meristematic tissues are the &#8220;growth engines&#8221; of a plant. Because these cells are constantly dividing to create new organs and extend the plant&#8217;s length, their structure is optimized for rapid metabolism and cell division rather than storage or structural support.\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. Meristematic tissues are responsible 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) Photosynthesis<br>B) Growth in plants<br>C) Water conduction<br>D) Food conduction<\/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>  Meristematic tissues are essentially the &#8220;growth engines&#8221; of a plant. They consist of actively dividing cells that facilitate the development of new organs and the overall expansion of the plant body.\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. Apical meristems occur at<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) Tips of root and shoot<br>B) Base of stem<br>C) In between permanent tissue<br>D) In leaves only<\/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>  Responsible for primary growth.\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. Intercalary meristem is found at<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) Node and base of internode<br>B) Root tip<br>C) Leaf apex<br>D) Stem apex only<\/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>  Found in grasses, responsible for regrowth after grazing.\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. Lateral meristems are responsible 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) Primary growth<br>B) Secondary growth<br>C) Root elongation<br>D) Leaf fall<\/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>  lateral meristems are responsible for making the plant thicker. This increase in the diameter or &#8220;girth&#8221; of the plant&#8217;s stems and roots is known as secondary growth.\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. Vascular cambium and cork cambium are examples 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) Apical meristem<br>B) Intercalary meristem<br>C) Lateral meristem<br>D) Permanent tissue<\/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>  Vascular cambium and cork cambium are both examples of lateral meristems. These tissues are found on the lateral sides of stems and roots and are responsible for the increase in thickness or girth of 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\">9. Which meristem is responsible for increase in thickness of stem\/root?<br><\/mark><\/strong>A) Apical meristem<br>B) Lateral meristem<br>C) Intercalary meristem<br>D) None<\/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>  Lateral meristems are specifically designed to increase the thickness, diameter, or girth of a plant&#8217;s stem and roots. This process is known as secondary growth.\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. Permanent tissues originate 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) Apical meristem<br>B) Lateral meristem<br>C) Differentiation of meristematic cells<br>D) Root 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>  Permanent tissues are formed when the cells produced by meristematic tissues stop dividing and undergo a process called differentiation.\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. Dedifferentiation 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) Conversion of permanent tissue into meristematic tissue<br>B) Conversion of meristematic into permanent<br>C) Cell death<br>D) Photosynthesis in parenchyma<\/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>  Dedifferentiation is a fascinating biological &#8220;reversal&#8221; where mature, specialized cells regain the ability to divide.\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. Redifferentiation means<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) Permanent tissue \u2192 Meristematic<br>B) Meristematic \u2192 Permanent tissue with specific function<br>C) Cell death<br>D) Mutation in tissue<\/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>  Redifferentiation is the final stage in a remarkable three-step cycle that allows plants to grow in thickness and heal themselves.\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. Meristematic cells divide 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) Meiosis<br>B) Mitosis<br>C) Amitosis<br>D) Both mitosis and meiosis<\/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>  Meristematic cells are the primary growth tissue in plants. To facilitate growth, they must produce more cells that are genetically identical to the original, which is the specific function of mitosis.\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. Root apical meristem is protected 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) Root cap<br>B) Root hair<br>C) Cork<br>D) Pericycle<\/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 root apical meristem is a very delicate region of actively dividing cells. Because roots must push through abrasive soil particles to grow, they require a specialized &#8220;shield&#8221; to prevent damage to these growth cells.\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. Shoot apical meristem is protected 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) Leaf primordia<br>B) Root cap<br>C) Cork<br>D) Cotyledons<\/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 Root Apical Meristem (RAM) has a specialized, cap-like structure (the root cap) to push through soil, the Shoot Apical Meristem (SAM) is protected by leaf primordia.\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. Cells of meristematic tissue contain<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) Dense cytoplasm and prominent nucleus<br>B) Large vacuoles<br>C) Dead protoplasm<br>D) Lignified walls<\/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>  Meristematic cells are optimized for rapid and continuous cell division. Their internal structure reflects this high metabolic state, focusing all cellular resources on the machinery needed for mitosis.\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. The term \u201cmeristem\u201d was coined 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) Hanstein<br>B) Strasburger<br>C) Haberlandt<br>D) Carl Wilhelm von N\u00e4geli<\/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>  The term \u201cmeristem\u201d was coined by the Swiss botanist Carl Wilhelm von N\u00e4geli in 1858\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. Pericycle 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) Primary growth<br>B) Secondary growth in roots<br>C) Photosynthesis<br>D) Storage of food<\/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 pericycle is a unique, pluripotent layer of cells located just inside the endodermis.\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. Cork cambium produces<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) Xylem and phloem<br>B) Cork cells and secondary cortex<br>C) Pith<br>D) Endodermis<\/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 cork cambium, also known as phellogen, is a lateral meristem responsible for the secondary growth that creates the protective outer covering of woody 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\">20. Xylem and phloem are produced 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) Apical meristem<br>B) Intercalary meristem<br>C) Vascular cambium<br>D) Cork cambium<\/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 vascular cambium is a thin layer of meristematic cells located between the xylem and phloem.\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. Meristematic tissues are absent 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) Animals<br>B) Plants<br>C) Fungi<br>D) Bacteria<\/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>  Meristematic tissue is a specialized type of tissue found exclusively in plants. While all the organisms listed grow and develop, they do so using different cellular mechanisms.\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. Interfascicular cambium 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) Primary meristem<br>B) Secondary meristem<br>C) Permanent tissue<br>D) None<\/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>  Interfascicular cambium is a perfect example of how plants can &#8220;reactivate&#8221; mature cells to allow for further growth.\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. Apical dominance in 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) Cytokinins<br>B) Gibberellins<br>C) Auxins<br>D) Abscisic acid<\/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>  Apical dominance is a phenomenon where the main, central stem of a plant grows more vigorously than the side (lateral) branches. This happens because the shoot tip (apex) produces hormones that suppress the growth of nearby buds.\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. Example of intercalary meristem<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) Sugarcane<br>B) Pea<br>C) Mango<br>D) Mustard<\/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>  Intercalary meristems are specifically found in monocots, particularly in members of the grass family (Poaceae). They are located at the base of internodes or leaf blades.\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. Which statement is NOT true about meristematic tissues?<br><\/mark><\/strong>A) Cells have dense cytoplasm<br>B) Cells divide actively<br>C) Cells are dead<br>D) Cells lack vacuoles<\/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>  Meristematic tissues are composed of living cells. Because their primary role is to divide and grow continuously, they must be highly active metabolically.\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. Permanent tissues are formed 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) Meristematic cells differentiating<br>B) Root hairs<br>C) Cork cambium only<br>D) Dead xylem<\/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>  Meristematic cells stop dividing and become specialized permanent tissues.\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>27. Permanent tissues are of how many main types?<br><\/strong><\/mark>A) One<br>B) Two<br>C) Three<br>D) Four<\/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>  (i) Simple, (ii) Complex, (iii) Special\/secretory.\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. Which of the following is a simple permanent tissue?<br><\/mark><\/strong>A) Xylem<br>B) Phloem<br>C) Parenchyma<br>D) Cambium<\/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>  Simple permanent tissues are called &#8220;simple&#8221; because they are composed of only one type of cell that is structurally and functionally similar. Parenchyma: The most common tissue, composed of living, thin-walled cells. They are responsible for photosynthesis, storage, and wound healing.\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. Parenchyma cells are usually<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) Dead, lignified<br>B) Living, thin-walled<br>C) Thick-walled and dead<br>D) Dead with pits<\/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>  Parenchyma cells have thin cellulose walls, store food, and can 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\">30. Parenchyma with chloroplasts 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) Collenchyma<br>B) Aerenchyma<br>C) Chlorenchyma<br>D) Sclerenchyma<\/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>  Chlorenchyma is a specialized type of parenchyma that contains chlorophyll (housed within chloroplasts). Because of these chloroplasts, the primary function of chlorenchyma is 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\">31. Parenchyma with large air spaces 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) Collenchyma<br>B) Aerenchyma<br>C) Chlorenchyma<br>D) Sclerenchyma<\/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>  Aerenchyma helps in buoyancy in aquatic 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\">32. Which simple permanent tissue provides mechanical support and flexibility?<br><\/mark><\/strong>A) Parenchyma<br>B) Collenchyma<br>C) Sclerenchyma<br>D) Phloem<\/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>  Collenchyma is a living simple permanent tissue that acts as a &#8220;living mechanical tissue.&#8221; It is uniquely designed to provide both structural strength and elasticity 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\">33. Cell wall thickening in collenchyma 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) Lignin<br>B) Cellulose and pectin<br>C) Suberin<br>D) Chitin<\/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>  Collenchyma is a living mechanical tissue, and its unique ability to provide both strength and flexibility is a direct result of its cell wall composition.\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. Sclerenchyma cells 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) Living with thin walls<br>B) Dead with lignified thick walls<br>C) Dead with thin walls<br>D) Living with chloroplasts<\/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>  Sclerenchyma is the primary mechanical tissue of mature plant parts.\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. Two types of sclerenchyma cells 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) Tracheids and vessels<br>B) Fibres and sclereids<br>C) Parenchyma and collenchyma<br>D) Cambium and phloem<\/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>  Sclerenchyma is a simple permanent tissue characterized by dead cells with highly thickened, lignified walls. Based on their shape, structure, and origin.\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. Coconut husk is composed 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) Parenchyma<br>B) Collenchyma<br>C) Sclerenchyma fibres<br>D) Xylem<\/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 coconut husk (the fibrous mesocarp) is a classic example of sclerenchyma tissue. Specifically, it is made of long, narrow sclerenchyma fibres that provide the extreme toughness and rigidity needed to protect the seed inside during long periods of floating in seawater.\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. Gritty texture in guava\/pear 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) Fibres<br>B) Sclereids (stone cells)<br>C) Parenchyma<br>D) Collenchyma<\/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 &#8220;gritty&#8221; or sandy sensation you feel when eating a pear or guava is caused by small clusters of sclereids, also known as stone cells. These are a specialized type of sclerenchyma cell.\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. Which of the following is a complex permanent tissue?<br><\/mark><\/strong>A) Parenchyma<br>B) Collenchyma<br>C) Xylem<br>D) Sclerenchyma<\/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>  Xylem is classified as a complex permanent tissue because it is made up of more than one type of cell that work together as a single unit to perform a common function\u2014the conduction of water and minerals.\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. Xylem is mainly responsible 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) Transport of food<br>B) Transport of water and minerals<br>C) Photosynthesis<br>D) Secretion<\/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>  Xylem is the specialized vascular tissue in plants responsible for the &#8220;upward&#8221; conduction of water and dissolved inorganic minerals.\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. Phloem is mainly responsible 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) Transport of water<br>B) Transport of food<br>C) Transport of minerals<br>D) Storage of starch<\/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>  Phloem is the living vascular tissue responsible for the translocation of organic nutrients\u2014primarily sucrose\u2014produced during 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\">41. The four elements of xylem 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) Tracheids, vessels, xylem parenchyma, xylem fibres<br>B) Sieve tubes, companion cells, phloem fibres, phloem parenchyma<br>C) Parenchyma, collenchyma, sclerenchyma, fibres<br>D) Cambium, cork, cortex, pith<\/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>  Xylem is a complex permanent tissue, which means it is composed of different types of cells that work together to perform a single function\u2014transporting water and providing mechanical support.\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. The chief water-conducting element in angiosperms 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) Tracheids<br>B) Vessels<br>C) Fibres<br>D) Phloem<\/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>  vessels (also known as vessel elements) are considered the chief or primary water-conducting elements in angiosperms (flowering 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\">43. The chief water-conducting element in gymnosperms 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) Tracheids<br>B) Vessels<br>C) Fibres<br>D) Parenchyma<\/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 gymnosperms (non-flowering plants like pines, cedars, and firs), tracheids are the primary cells responsible for the transport of water and minerals.\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. Xylem parenchyma 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) Dead<br>B) Living<br>C) Lignified<br>D) Mechanical 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>  Xylem parenchyma stores food and assists in lateral conduction.\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. Which xylem element is absent in most gymnosperms?<br><\/mark><\/strong>A) Tracheids<br>B) Vessels<br>C) Fibres<br>D) Parenchyma<\/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 most gymnosperms (like pines and cedars), the xylem is considered &#8220;non-porous&#8221; because it lacks vessels.Instead, they rely almost entirely on tracheids for water conduction.\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. The elements of phloem 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) Sieve tubes, companion cells, phloem fibres, phloem parenchyma<br>B) Tracheids, vessels, fibres, parenchyma<br>C) Cambium, cork, pith, cortex<br>D) Guard cells, epidermis, cork, sclereids<\/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>  Phloem is a complex permanent tissue found in vascular plants. It acts as the plant&#8217;s &#8220;delivery system,&#8221; transporting organic nutrients (mainly sucrose) from the leaves to the roots, fruits, and growing buds.\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. Sieve tubes are living 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) They have nuclei<br>B) They are supported by companion cells<br>C) They are lignified<br>D) They contain chloroplasts<\/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>  Sieve tubes are unique because they are living cells without a nucleus at maturity. To stay alive and function despite lacking a nucleus and ribosomes, they rely entirely on their &#8220;neighbors&#8221;\u2014the companion cells.\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. Phloem fibres 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) Living<br>B) Dead<br>C) Photosynthetic<br>D) Storage cells<\/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>  Phloem fibres (bast fibres) are elongated, lignified, and used in jute.\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. Which phloem element is absent in gymnosperms?<br><\/mark><\/strong>A) Phloem parenchyma<br>B) Companion cells<br>C) Sieve cells<br>D) Fibres<\/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>  Gymnosperms have sieve cells instead of sieve tubes and lack companion cells.\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. Bast fibres are obtained 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) Phloem<br>B) Xylem<br>C) Pith<br>D) Cortex<\/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>  Phloem fibres provide commercial fibres like jute, flax, hemp.\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. The outermost protective layer in young plant parts 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) Cortex<br>B) Epidermis<br>C) Pericycle<br>D) Endodermis<\/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>  Epidermis is a single cell layer providing protection.\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. Cuticle on epidermis is made 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) Lignin<br>B) Cutin (waxy substance)<br>C) Suberin<br>D) Pectin<\/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>   Prevents water loss and provides protection.\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. Small pores on epidermis for gaseous exchange 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) Lenticels<br>B) Stomata<br>C) Hydathodes<br>D) Trichomes<\/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>  Stomata are microscopic openings or pores found in the epidermis of leaves and young stems. They are the primary site for gaseous exchange and the regulation of water loss in 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\">54. Guard cells controlling stomatal opening 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) Living<br>B) Dead<br>C) Lignified<br>D) Non-functional<\/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>  Guard cells must be living to function because the opening and closing of stomata is an active physiological process that requires energy (ATP) and metabolic activity.\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. Trichomes 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) Root hairs<br>B) Epidermal outgrowths<br>C) Xylem elements<br>D) Phloem fibres<\/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 reduce transpiration and protect from herbivores.\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. The main tissue of cortex 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) Collenchyma<br>B) Parenchyma<br>C) Sclerenchyma<br>D) Phloem<\/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 cortex is a primary region of ground tissue located between the epidermis (outer layer) and the vascular bundles (xylem and phloem). While other tissues can be present, the vast majority of the cortex is composed of parenchyma cells.\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. The innermost layer of cortex 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) Endodermis<br>B) Pericycle<br>C) Phloem<br>D) Cambium<\/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 regulates flow of water and minerals into vascular 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\">58. Casparian strips in endodermis are made 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) Lignin<br>B) Cutin<br>C) Suberin<br>D) Pectin<\/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>  Casparian strips are specialized, waterproof bands located in the endodermis (the innermost layer of the root cortex). Their primary function is to regulate the flow of water and dissolved minerals from the soil into the vascular cylinder.\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. Pericycle is located<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) Inside epidermis<br>B) Inside endodermis, around vascular bundles<br>C) Around pith<br>D) Around cuticle<\/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 pericycle is a unique layer of cells that marks the outermost boundary of the stele (the central vascular cylinder) in both roots and stems.\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. In dicot stem, vascular bundles 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) Scattered<br>B) In a ring<br>C) Absent<br>D) In parallel rows<\/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>  Helps in secondary growth.\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. In monocot stem, vascular bundles 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) Scattered<br>B) In a ring<br>C) Absent<br>D) Radial<\/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>  Monocot stems lack cambium and secondary growth.\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. Vascular bundles in dicot stem 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) Open and collateral<br>B) Closed and collateral<br>C) Radial<br>D) Conjoint and closed<\/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>  Open bundles have cambium (allowing secondary growth).\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. Vascular bundles in monocot stem 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) Open<br>B) Closed<br>C) With cambium<br>D) In a ring<\/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>  No cambium, hence no secondary growth.\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. Pith is prominent 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) Dicot stem<br>B) Monocot stem<br>C) Dicot root<br>D) Monocot root<\/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>  Dicot Stem is the primary intended answer because the pith is a defining central feature of its ring-like vascular arrangement.\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. Pith is absent or reduced 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) Dicot stem<br>B) Monocot stem<br>C) Dicot leaf<br>D) Monocot leaf<\/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 a monocot stem, the pith is considered absent or reduced because the ground tissue is not differentiated into distinct regions like the cortex, pericycle, and pith.\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. Vascular bundles in dicot root 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) 2\u20136 (polyarch)<br>B) Many (polyarch)<br>C) Scattered<br>D) Concentric<\/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 a dicot root, the number of vascular bundles (xylem and phloem patches) is limited, typically ranging from two to six.\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. Vascular bundles in monocot root 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) 2\u20136 (diarch to hexarch)<br>B) Many (polyarch)<br>C) Scattered<br>D) Concentric<\/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>  monocot roots usually have more than six, a condition known as polyarch.\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. Exarch xylem condition is 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) Stem<br>B) Root<br>C) Leaf<br>D) Pith<\/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 exarch, protoxylem lies towards periphery (common in roots).\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. Endarch xylem condition is 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) Root<br>B) Stem<br>C) Leaf<br>D) Pericycle<\/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 endarch, protoxylem lies towards centre (stems).\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. Secondary growth is present 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) Dicot stem and root<br>B) Monocot stem and root<br>C) Leaf only<br>D) All plants equally<\/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>  Secondary growth is the process by which a plant increases in girth or thickness (rather than height). It is a characteristic feature of dicots and gymnosperms, but it is typically absent in monocots.\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. Secondary growth is absent 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) Dicot stem<br>B) Dicot root<br>C) Monocot stem<br>D) Dicot leaf<\/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>  Secondary growth is the process that increases the girth or thickness of a plant. While this is a standard feature of most dicot stems, dicot roots, and gymnosperms, it is characteristically absent in monocots (like maize, wheat, and grasses).\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. In dicot root, vascular bundles are arranged<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) Scattered<br>B) Radially<br>C) In ring<br>D) Concentric<\/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 all roots (both dicot and monocot), the vascular bundles are arranged in a radial pattern.This means that the xylem and phloem are not joined together in a single bundle.\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. In dicot stem, vascular bundles are arranged<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) Scattered<br>B) Radially<br>C) In ring (collateral, open)<br>D) Polyarch<\/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>  In a dicot stem, the vascular bundles are arranged in a highly organized ring-like pattern around a central pith.\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. In leaf, vascular bundles 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) Collateral and closed<br>B) Radial<br>C) Open<br>D) Concentric<\/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>  Vascular bundles in leaves lack cambium, hence no secondary growth.\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. Bulliform cells are present 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) Dicot leaf<br>B) Monocot leaf (upper epidermis)<br>C) Root epidermis<br>D) Stem cortex<\/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>  Bulliform cells help in rolling and unrolling of monocot leaves.\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. Growth in girth of dicot stems is due to activity 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) Apical meristem<br>B) Vascular cambium and cork cambium<br>C) Pericycle<br>D) Phloem<\/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>   Both lateral meristems bring about secondary growth.\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. Annual rings in woody plants are formed 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) Apical meristem activity<br>B) Secondary xylem formed by vascular cambium<br>C) Cork cambium activity<br>D) Pith parenchyma<\/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>  Annual rings (also known as growth rings) are the visible results of secondary growth in trees. They are essentially layers of secondary xylem (wood) produced by the vascular cambium over the course of a single growing season.\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. Heartwood differs from sapwood 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) Function<br>B) Colour<br>C) Hardness<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>  Heartwood is darker, non-functional, lignified; sapwood is lighter and functional.\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. Lenticels are involved 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) Transpiration<br>B) Secondary growth<br>C) Gaseous exchange in woody stems<br>D) Food conduction<\/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>  Lenticels are specialized, lens-shaped pores found in the bark or periderm of woody stems and roots. They act as &#8220;breathing pores&#8221; for the plant, particularly after the epidermis has been replaced by bark.\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. Periderm consists 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) Epidermis<br>B) Cork cambium, cork, and secondary cortex<br>C) Pith, cortex, phloem<br>D) Xylem and phloem<\/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 periderm is the protective tissue system that replaces the epidermis in woody stems and roots as they undergo secondary growth.\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. Bark of a 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) Only cork<br>B) All tissues outside vascular cambium<br>C) Only phloem<br>D) Xylem and phloem together<\/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 botany, bark is a broad, non-technical term used to describe every layer of tissue located external to the vascular cambium in a woody stem or root.\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. Early wood 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) Formed in spring, less dense, larger vessels<br>B) Formed in winter, dense and narrow vessels<br>C) Formed in root apex<br>D) Dead part of xylem<\/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>  Early wood, also known as spring wood, is the layer of wood produced by a tree during the early part of the growing season (usually spring).\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. Late wood 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) Formed in summer\/winter, dense with thick-walled vessels<br>B) Formed in spring<br>C) Found in pith<br>D) Dead cortex<\/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>  Late wood, also known as autumn wood, is the layer of secondary xylem produced towards the end of the growing season.\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. Sapwood is also 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) Active xylem<br>B) Dead xylem<br>C) Periderm<br>D) Phellem<\/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>  Sapwood is the peripheral (outer) region of the secondary xylem in a woody plant. It is biologically &#8220;active&#8221; because it contains living parenchyma cells and is the primary tissue responsible for the conduction of water and minerals from the roots to the leaves.\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. Heartwood is also 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) Active wood<br>B) Dead, non-functional wood<br>C) Pericycle<br>D) Cambial wood<\/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 a mature woody tree, the center of the trunk is occupied by heartwood, which is the older, inner layer of secondary xylem. It is technically &#8220;dead&#8221; because its cells are no longer involved in the transport of water or 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\">86. Cork cells 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) Living, thin-walled<br>B) Dead, suberized, protective<br>C) Lignified, dead<br>D) Photosynthetic<\/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>  Cork cells (technically called phellem) are the outermost layer of the periderm in woody plants. They are produced by the cork cambium to replace the epidermis as the plant grows in girth.\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. Which tissue is also known as bast fibres?<br><\/mark><\/strong>A) Xylem fibres<br>B) Phloem fibres<br>C) Collenchyma<br>D) Sclereids<\/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>  Phloem fibres are also known as bast fibres. These are sclerenchymatous cells found in the phloem tissue (usually the secondary phloem) that provide mechanical strength 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\">88. The commercial fibre jute is obtained 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) Phloem of stem<br>B) Xylem of root<br>C) Leaf mesophyll<br>D) Pith of stem<\/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>  Jute is a bast fibre, which means it is derived from the secondary phloem (the &#8220;inner bark&#8221;) of the plant&#8217;s stem. Specifically, it is obtained from the species Corchorus olitorius and Corchorus capsularis.\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. Cork cambium is also known 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) Phellogen<br>B) Phellem<br>C) Phelloderm<br>D) Endodermis<\/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 cork cambium is a lateral meristematic tissue responsible for secondary growth in the cortical region of 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\">90. Cork is also known 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) Phellogen<br>B) Phellem<br>C) Phelloderm<br>D) Cambium<\/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>  &#8220;cork&#8221; is the tissue that forms on the outer surface of a woody plant&#8217;s stem or root to replace the epidermis. It is specifically referred to as phellem.\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. Secondary cortex produced by cork cambium 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) Phellogen<br>B) Phellem<br>C) Phelloderm<br>D) Endodermis<\/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 secondary cortex is a living tissue layer produced on the inner side of the cork cambium during secondary growth. It is composed of thin-walled parenchyma cells that often look quite similar to the primary cortex cells.\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. The function of pericycle in roots 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) Primary growth<br>B) Origin of lateral roots<br>C) Photosynthesis<br>D) Secondary thickening 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 pericycle is a unique layer of cells located just inside the endodermis of the root.Its most critical and universal function across all vascular plants is the initiation of lateral (side) roots.\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\">93. Which plant shows anomalous secondary growth?<br><\/mark><\/strong>A) Sunflower<br>B) Maize<br>C) Dracaena<br>D) Mustard<\/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>  Secondary growth in monocots like Dracaena is abnormal.\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. Secondary xylem forms towards<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) Outside<br>B) Inside<br>C) Pericycle<br>D) Cork<\/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>  Secondary Xylem (Wood): Formed towards the inside (towards the pith or center of the stem).\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. Secondary phloem forms towards<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) Inside<br>B) Outside<br>C) Pith<br>D) Medullary rays<\/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>  Secondary Phloem: Produced towards the outside (towards the periphery or bark).\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. Wood is actually<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) Xylem<br>B) Phloem<br>C) Cambium<br>D) Cortex<\/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>  &#8220;wood&#8221; is the common name for secondary xylem. It is the complex, fibrous tissue produced by the vascular cambium during the secondary growth of dicot stems and roots.\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\">97. The annual rings are useful 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) Identifying plant family<br>B) Age determination of plant<br>C) Photosynthesis<br>D) Storage of food<\/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>  Annual rings (also called growth rings) are concentric layers of secondary xylem that appear in the cross-section of a woody stem or root.\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. Which one of the following is NOT a complex tissue?<br><\/mark><\/strong>A) Xylem<br>B) Phloem<br>C) Cambium<br>D) None<\/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>  Cambium is meristematic, not a permanent complex tissue.\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. What is the main function of companion cells in phloem?<br><\/mark><\/strong>A) Provide mechanical support<br>B) Assist sieve tube elements in translocation of food<br>C) Store starch<br>D) Help in transpiration<\/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>  Companion cells are specialized parenchyma cells that act as a &#8220;life-support system&#8221; for sieve tube elements in the phloem of angiosperms. They are essential because mature sieve tube elements lack a nucleus, ribosomes, and most organelles to provide a clear path for food transport.\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\">100. Which of the following tissues is NOT dead at maturity?<br><\/mark><\/strong>A) Sclerenchyma<br>B) Cork<br>C) Phloem fibres<br>D) Collenchyma<\/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>  Collenchyma cells remain living, unlike sclerenchyma and cork.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. Study of plant tissues is called ____________.A) HistologyB) CytologyC) MorphologyD) Taxonomy Show Answer Answer: A Explanation: Histology deals with microscopic study of tissues. 2. Plant tissues are broadly classified into ____________.A) Xylem and phloemB) Meristematic and permanentC) Simple and complexD) Collenchyma and sclerenchyma Show Answer Answer: B Explanation: This is the fundamental classification. 3.<\/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":[16133,16490,16154,16147,16158,16139,16529,16506,16509,16515,16538,16135,16507,16525,16494,5649,5652,5623,16533,16535,16487,16503,16511,16537,16528,16432,16527,16512,16513,16510,16523,16534,16518,16517,16265,16532,16521,16514,16536,16524,16531,11004,16519,16530,16508,16505,16541,16522,16540,16526,16539,16504,16520,16516],"class_list":{"0":"post-12975","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-biology","7":"tag-biology-mcqs","8":"tag-biology-practice-questions","9":"tag-biology-questions-and-answers","10":"tag-biology-quiz","11":"tag-biology-revision","12":"tag-biology-study-material","13":"tag-botany-mcqs","14":"tag-botany-questions","15":"tag-cell-differentiation","16":"tag-class-11-biology-mcqs","17":"tag-collenchyma","18":"tag-competitive-exam-biology","19":"tag-complex-permanent-tissue","20":"tag-function-of-plant-tissue","21":"tag-important-biology-topics","22":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","23":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-examsin-kannada","24":"tag-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","25":"tag-mcqs-with-answers-and-explanations","26":"tag-meristematic-tissue","27":"tag-neet-biology-mcqs","28":"tag-parenchyma","29":"tag-permanent-tissue","30":"tag-phloem","31":"tag-photosynthetic-tissues","32":"tag-plant-anatomy","33":"tag-plant-anatomy-for-exams","34":"tag-plant-biology","35":"tag-plant-cell-types","36":"tag-plant-cells","37":"tag-plant-growth-and-development","38":"tag-plant-histology","39":"tag-plant-histology-quiz","40":"tag-plant-internal-structure","41":"tag-plant-physiology","42":"tag-plant-science-quiz","43":"tag-plant-stem-and-root-tissues","44":"tag-plant-tissue-function","45":"tag-plant-tissue-mcqs","46":"tag-plant-tissue-notes","47":"tag-plant-tissue-system","48":"tag-plant-tissue-top-100-mcqs-with-answer-and-explanation","49":"tag-plant-transport-system","50":"tag-science-quiz","51":"tag-sclerenchyma","52":"tag-simple-permanent-tissue","53":"tag-structure-and-function-of-tissues","54":"tag-structure-of-plant-tissue","55":"tag-study-of-xylem-and-phloem","56":"tag-tissue-classification","57":"tag-tissue-system-in-plants","58":"tag-vascular-bundle","59":"tag-vascular-tissue-system","60":"tag-xylem"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12975","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=12975"}],"version-history":[{"count":107,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12975\/revisions"}],"predecessor-version":[{"id":38527,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/12975\/revisions\/38527"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=12975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=12975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=12975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}