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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?

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