Unisexuality of flowers prevents:

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(D) Unisexuality is an outbreeding device in flowering plants.
If a plant is dioecious (e.g.,papaya),it prevents both autogamy (self-pollination with

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(D) Unisexuality is an outbreeding device in flowering plants.
If a plant is dioecious (e.g.,papaya),it prevents both autogamy (self-pollination within the same flower) and geitonogamy (pollination between two flowers on the same plant).
Since the flowers are unisexual and located on different plants,the pollen cannot reach the stigma of the same flower or another flower on the same plant.
Therefore,it prevents both autogamy and geitonogamy.

Similar Questions

In which of the following are both autogamy and geitonogamy prevented?

What type of flowers are found in dioecious plants?

Does self-incompatibility impose any restrictions on autogamy? Give reasons and suggest the method of pollination in such plants.

In which plants do outbreeding devices prevent autogamy but not geitonogamy?

Cleistogamy occurs in which plant?

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