Question

Which of the following prevents self pollination?

• A. Self sterility
• B. Herkogamy
• C. Dichogamy
• D. All of the above

Answer 1

The correct option is D All of the above

self-sterility The condition found in many hermaphrodite organisms in which male and female reproductive cells produced by the same individual will not fuse to form a zygote, or if they do, the zygote is unable to develop into an embryo.
Herkogamy is a common strategy employed by hermaphroditic angiosperms to reduce sexual interference between male (anthers) and female (stigma) function. Herkogamy differs from other such strategies by supplying a spatial separation of the anthers and stigma.

Dichogamy is the ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented.

Hence all Options are correct so the correct answer is option D