Question

Mention the two strategies evolved to prevent self-pollination in flowers.

Class 12th.​

Answer 1

Strategies adopted by flowering plants to prevent self-pollination:

Herkogamy: Flowers possess some mechanical barrier on their stigmatic surface to avoid self-pollination.

Dichogamy: Pollen and stigma of the flower mature at different times to avoid self-pollination.

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Answer 2

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✯ The strategies evolved to prevent self-pollination in flowers are:

The strategies evolved to prevent self-pollination in flowers are:

1) Dichogamy- The maturation of anthers and stigma at different time in a bi-sexual flower which prevents self-pollination.

The strategies evolved to prevent self-pollination in flowers are:

1) Dichogamy- The maturation of anthers and stigma at different time in a bi-sexual flower which prevents self-pollination.

2) Self-incompatibility: The pollen grains of a flower are not capable of completing growth on the stigma of the same flower.

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