First slide

Pre-fertilisation : Structures and Events

Question

The outbreeding device that prevents both autogamy and geitonogamy is:

Easy

A

Monocliny
B

Dicliny and dioecy
C

Bisexuality
D

Herkogamy

Solution

The outbreeding device that prevents both autogamy and geitonogamy is dioecy dicliny. In dioecy and dicliny the staminate and pistillate flowers are present on different plants. Therefore, both autogamy and geitonogamy is prevented. Whereas monocliny or bisexuality promotes autogamy. Herkogamy prevents autogamy but not geitonogamy.

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