Which of the following prevents inbreeding?

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(D) Inbreeding refers to the fertilization of a flower by pollen from the same plant or the same flower. To promote cross-pollination and increase gen

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Self-incompatibility

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(D) Inbreeding refers to the fertilization of a flower by pollen from the same plant or the same flower. To promote cross-pollination and increase genetic diversity,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. $2$. Bisexual flowers and self-pollination actually promote inbreeding. $3$. Development of male and female flowers on the same plant (monoecious) prevents autogamy but not geitonogamy. Therefore,self-incompatibility is the most effective genetic mechanism to prevent inbreeding.

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