Sexual Reproduction in Flowering Plants( Flower structure; Development of Male and Female Gametophytes; Pollination-types, Agencies...) NEET Questions

Biology - Reproduction

Sexual Reproduction in Flowering Plants( Flower structure; Development of Male and Female Gametophytes; Pollination-types, Agencies...) MCQ Questions


7.
Which cells in the embryo sac of angiosperms degenerate after fertilization?
A.
Polar nuclei and antipodals
B.
Egg and antipodals
C.
Synergids and antipodals
D.
Egg and synergids
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ANSWER :
C. Synergids and antipodals
8.
The filiform apparatus is found in:
A.
Egg cell
B.
Central cell
C.
Synergids
D.
Antipodals
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ANSWER :
C. Synergids
9.
Microsporogenesis is the process of formation of:
A.
Male gametes from pollen grains
B.
Pollen grains from microspores
C.
Anther from microsporangium
D.
Microspores from microspore mother cell
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ANSWER :
D. Microspores from microspore mother cell
10.
How many pollen grains are formed from 10 microspore mother cells?
A.
80
B.
20
C.
40
D.
10
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ANSWER :
C. 40
11.
How many meiotic divisions are required to produce 200 pollen grains?
A.
100
B.
50
C.
200
D.
25
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ANSWER :
B. 50
12.
In majority of angiosperms (about 60%), pollen grains are shed at:
A.
4-celled stage
B.
1-celled stage
C.
2-celled stage
D.
3-celled stage
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ANSWER :
C. 2-celled stage