Biology Multiple Choice Questions and Answers for Different Competitive Exams

MCQ on Sexual Reproduction in Angiosperms (Flowering Plants)

    1.  Testa of a seed is produced from
a) hilum
b) ovary wall
c) funicle
d) outer integument of ovule

2. Endosperm is formed during the double fertilization by
a) one polar nuclei and one male gamete
b) two polar nuclei and one male gamete
c) two polar nuclei and two male gamete
d) ovum and male gamete

3. One advantage of cleistogamy is
a) it leads to the greater genetic diversity
b) seed set is not dependent on pollinators
c) seed dispersal is more efficient and widespread
d) each visit of a pollinator result in transfer of hundreds of pollen grains

4. Pollen grains are shed at which stage?
a)  Two celled
b) Three celled
c) Single celled
d) Usually at two celled, but sometimes three celled

5. Filiform apparatus is characteristic of
a) egg
b) synergids
c) antipodal cells
d) anther wall

6. An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
a) hemitropous
b) anatropous
c) orthrotropous
d) campylotrophous

7. The egg apparatus of angiosperm comprises
a) an egg cell and two antipodals
b) an egg cell and the central cell
c) an egg cell and the two polar nuclei
d) an egg cell and two synergids

8. Fusion of male gamete with polar nuclei of embryosac is known as
a) Pollination
b) embrogeny
c) triple fusion
d) double fertilization

9. Study the following statements and select the correct one.
A. Tapetum nourishes the developing pollen grains
B. Hilum represents the junction between ovule and funicle
C. In aquatic plants such as water hyacinth and water lily, pollination occurs by water.
D. The primary endosperm nucleus is triploid.
a) A and b are correct but C and D are incorrect
b) A, B and D are correct but C is incorrect
c) B, C and D are correct but A is incorrect
d) A and D are correct but B and C are incorrect

10. The entry of pollen tube into the ovule through micropyle is called

a) mesogamy
b)anisogamy
c) porogamy
d) chalazogamy
Learn more:
Answers
1. d) outer integument of ovule
2. b) two polar nuclei and one male gamete
3. b) seed set is not dependent on pollinators
4. d) Usually at two celled, but sometimes three celled
5.  b) synergids
6. a) hemitropous
7. d) an egg cell and two synergids
8. c) triple fusion
9. b) A, B and D are correct but C is incorrect
10. c) porogamy

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