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(A) Self-pollination is the transfer of pollen grains from the anther to the stigma of the same flower. To promote cross-pollination,plants have evolv

Vedclass · Accepted Answer

Self-incompatibility

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(A) Self-pollination is the transfer of pollen grains from the anther to the stigma of the same flower. To promote cross-pollination,plants have evolved several 'outbreeding devices'.$1$. Self-incompatibility is a genetic mechanism that prevents self-pollen (from the same plant or flower) from fertilizing the ovules by inhibiting pollen germination or pollen tube growth in the pistil.$2$. Anther and stigma placed close to each other,production of bisexual flowers,and self-compatibility actually promote self-pollination rather than preventing it.Therefore,the correct option is $A$.

Which of the following mechanisms prevents self-pollination?

Similar Questions

In some plants,the style is shorter,while in others,it is longer than the stamens. This condition is called:

The maturation of male (anthers) and female (stigma) reproductive structures at different times in the same flower (in order to reduce the possibility of self-pollination) is called:

Allogamy (cross-pollination) is best favoured by:

Monoecious plants with unisexual flowers will prevent $:$

Which one of the following characteristics promotes cross-pollination?

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