20 nos. most common MCQs on Sexual Reproduction of Higher Plants

      1.   Which floral organ produces pollen in higher plants?

a) Stigma

b) Anther

c) Ovary

d) Petal
Answer: b) Anther

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2.      The fusion of male and female gametes in plants results in:

a) Seed

b) Embryo

c) Zygote

d) Fruit
Answer: c) Zygote

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3.      Which process involves the transfer of pollen from the anther to the stigma?

a) Germination

b) Pollination

c) Fertilization

d) Syngamy
Answer: b) Pollination

4.      Double fertilization is unique to:

a) Gymnosperms

b) Angiosperms

c) Pteridophytes

d) Bryophytes
Answer: b) Angiosperms

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5.      Which part of the pistil receives the pollen during pollination?

a) Ovary

b) Style

c) Stigma

d) Ovule
Answer: c) Stigma

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6.      Fertilization in flowering plants occurs in:

a) Petal

b) Style

c) Ovary

d) Sepal
Answer: c) Ovary

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7.      The triploid primary endosperm nucleus is formed as a result of:

a) Syngamy

b) Triple fusion

c) Embryogenesis

d) Cleavage
Answer: b) Triple fusion

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8.      Which cell in the embryo sac fuses with the second male gamete?

a) Egg cell

b) Synergid

c) Antipodal

d) Central cell
Answer: d) Central cell

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9.      The male gametophyte in flowering plants is represented by:

a) Pollen grain

b) Anther

c) Embryo sac

d) Ovule
Answer: a) Pollen grain

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10.  Which of the following is NOT a method of pollination?

a) Insect

b) Water

c) Bird

d) Seed
Answer: d) Seed​

11.  The ovule after fertilization develops into:

a) Fruit

b) Seed

c) Stigma

d) Carpel
Answer: b) Seed​

12.  Which part of the embryo sac provides nourishment to the developing embryo?

a) Synergids

b) Antipodal cells

c) Egg cell

d) Central cell (endosperm)
Answer: d) Central cell​

13.  The correct sequence in the artificial hybridization protocol is:

a) Selection of parents – Emasculation – Bagging – Collection of pollen – Dusting pollen – Rebagging

b) Emasculation – Collection of pollen – Bagging – Dusting pollen – Rebagging – Selection of parents

c) Bagging – Emasculation – Rebagging – Collection of pollen – Dusting pollen

d) Selection of parents – Bagging – Emasculation – Collection of pollen – Dusting pollen – Rebagging

Answer: a) Selection of parents – Emasculation – Bagging – Collection of pollen – Dusting pollen – Rebagging

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14.  Which mechanism prevents self-pollination in plants?

a) Emasculation

b) Bagging

c) Herkogamy

d) Artificial pollination
Answer: c) Herkogamy

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15.  Which is the female reproductive part of a flower?

a) Androecium

b) Gynoecium

c) Corolla

d) Calyx
Answer: b) Gynoecium

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16.  Which event ensures genetic variation in sexually reproducing plants?

o    a) Mitosis

o    b) Fusion of gametes

o    c) Vegetative propagation

o    d) Apomixis
Answer: b) Fusion of gamete

o     

17.  In angiosperms, double fertilization leads to the formation of:

a) Two embryos

b) Zygote and endosperm

c) Cotyledons and radicle

d) Fruit and seed coat
Answer: b) Zygote and endosperm

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18.  Which is necessary for cross-pollination?

a) Both-sex organs in one flower

b) Genetic diversity

c) Pollinating agents

d) Self-sterility only
Answer: c) Pollinating agents

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19.  The function of the antipodal cells is primarily:

a) Fertilization

b) Nourishment

c) Attracting pollen

d) Unknown/Supportive
Answer: d) Unknown/Supportive

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20.  Which structure forms the fruit in flowering plants?

a) Ovule

b) Style

c) Ovary

d) Sepal

Answer: c) Ovary​