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From among the situations given below, c...

From among the situations given below, choose the one that prevents both autogamy and geitonogamy.

A

Monoecious both autogamy and geitonogamy

B

Dioecious plant bearing only male or female flowers

C

Monoecious plant with bisexual flowers

D

Dioecious plant with bisexual flowers

Text Solution

Verified by Experts

The correct Answer is:
B
Monoecious (bisecual) plant bearing either bisexual or unisexual flowers can exhibit both autogamy as well as geitonogamy. Dioecious (unisexual) plants bearing only male of female flowers will not show autogamy or geitongamy and only xenogmay is possible.
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NCERT FINGERTIPS-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Sexual Reproduction In Flowering Plants
  1. Choose the correct statement from the following.

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  2. A particular species of plant produces light, non-sticky pollen in lar...

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  3. From among the situations given below, choose the one that prevents bo...

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  4. In a fertilised embryo sac, the haploid, diploid and triploid structur...

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  5. In an embryo sac, the cells that degenerate after fertilisation are

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  6. While planning for an articifical hybridisation programmme involving d...

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  7. In the embryos of a typical dicot and a grass, true homologous structu...

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  8. The phenomenon observed in some plants wherein parts of the sexual ap...

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  9. In a flower, if the megaspore mother cell forms magaspores without und...

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  10. The phenomenon wherein, the ovary develops into a fruit without fertil...

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  11. Assertion : An angiospermous flower represents the modified condensed ...

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  12. Assertion : A typical microsporangium of angiosperms is generally surr...

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  13. Assertion : In a microsporangium, the tapetal cells possess tittle cyt...

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  14. Assertion : In most angiosperms, microspores of a tetrad grow and sepa...

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  15. Assertion : Exine of a pollen grain is made up of sporopollenin which ...

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  16. Assertion : The method of development of embryo sac from a single func...

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  17. Assertion : Although geitonogamy is functionally crosspollination invo...

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  18. Assertion : Hydrophily constitues a major mode of pollination in most ...

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  19. Assertion : Only the pre-pollination growth of male gametophyte occurs...

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  20. Assertion : Self-incompatibility is a genetic mechanism which prevents...

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