Question

Dioecious flowering plants prevent autogamy and geitonogamy?

Answer 1

Dioecious flowering plants contain unisexual flower. In dioecious condition two types of unisexual flowers occur on different plants. Hence, it does not favour autogamy and geitonogamy because autogamy takes place in bisexual flowers and geitonogamy take place between different flower of the same plant.

HOPE IT'S HELPFUL ☺

Answer 2

$\huge{ \underline{\underline{ \fcolorbox{white}{pink}{\sf{Answer :-}}}}}$

word autogamy mean self fertilization. this is a special type of self pollination in which an intersexual or top flower is pollinated through its own pollen. Autogamy is only possible when anther and stigma are close to each other and which has synchrony in pollen release and stigma respectively. It is frequently meet in unicellular organisms such as protozoan, protist.

autogamy in plant :- the plant which is capable to fertilize themselves rather than hybridize with another plants.

Autogamy occurs by three method:-

Namely-homogamy

Cliestogamy

Bud pollination