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1. The functions of tapetum is to_________.
A. Produce ubisch bodies
B. Produce pollen grains
C. Provide nourishment to the developing pollen grains
D. Store and protect pollen grains
ANSWER:C.Provide nourishment to the developing pollen grains
SOLUTION :Tapetum provides nutrition for the developing pollen grains. They also act as a precursor source for the pollen wall or pollen coat. It transports supplements to the anthers. Pollenkitt is also formed by the tapetal cells around the microsporocytes..
2. Exine of pollen grain is formed of _________.
A. Callose
B. Pecto – cellulose
C. Ligno – cellulose
D. Sporopollenin
ANSWER:D.Sporopollenin
SOLUTION:Exine of the pollen grain is made up of Sporopollenin.
3. Pollen grains can be stored in liquid nitrogen at_______.
A. 700 C
B. 1000 C
C. – 1960 C
D. OO C
ANSWER :C.- 1960 C
SOLUTION:Pollen grains can be stored for several years in liquid nitrogen at a temperature of -196℃ and this is known as cryopreservation.
4. Ovule is __________.
A. Megasporangium
B. Megasporophyll
C. Integumented megasporangium
D. Rolled megasporophyll
ANSWER: A.Megasporangium
SOLUTION: An ovule is a small structure in the ovary of a seed plant that contains and gives rise to the plant’s female reproductive cells.
5. Filiform apparatus is found in _________.
A. Synergids
B. Anther wall
C. Secondary nucleus
D. Egg cell
ANSWER:A.Synergids
SOLUTION:Filiform apparatus is present inside the ovary of the flower. It is a thickened and prominent structure. Synergids show a filiform apparatus attached to their upper wall. It attracts and guides the pollen tube.
6. How many meiotic division are required for the formation of 100 functional megaspores?
A. 100
B. 50
C. 75
D. 25
ANSWER: A.100
SOLUTION:So, only 25 meiotic division is required for 100 megaspores. But, for 100 functional megaspores, 100 meiotic divisions are required.
7. Non – albuminuos seed is produced in _______.
A. Maize
B. Castor
C. Wheat
D. Pea
ANSWER:D.Pea
SOLUTION :
Non-albuminous seed is produced in pea.
8. During microsporogenesis , meiosis occurs in ___________.
A. Endotheclum
B. Microspore mother cells
C. Microspore tetrads
D. Pollen grains
ANSWER: B.Microspore mother cells
SOLUTION:During microsporogenesis, meiosis occurs in microspore mother cells.
9. In the embryos of a typical dicot and a grass , true homologus are ______.
A. Coleorhiza and coleoptile
B. Coleoptile and scutellum
C. Cotyledons and scutellum
D. Hypocotyl and radicle
ANSWER:C.Cotyledons and scutellum
SOLUTION: In the embryos of a typical dicot and a grass, true homologous structures are. Hypocotyl and radicle.
10. The phenomenon wherein, the ovary develops into a fruit without fertilization is called ______.
A. Parthenocarpy
B. Apomixis
C. Asexual reproduction
D. Sexual reproduction
ANSWER: A.Parthenocarpy
SOLUTION:
Some plants are able to produce fruits without fertilisation. This phenomenon is called parthenocarpy.