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Question

Which of the following is not a criteria for autogamy to occur?


A

Flowers must be bisexual.

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B

Flowers require synchrony in pollen release and stigma receptivity.

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C

Anthers and stigma should lie close to each other.

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D

Flowers should exhibit heterostyly.

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Solution

The correct option is D

Flowers should exhibit heterostyly.


A flower should fulfill certain criteria to enable autogamy. They must be bisexual with their anthers and the stigma maturing at the same time. The anthers and stigma should be positioned close to each other to increase the chances of autogamy. On the other hand, bisexual flowers exhibiting heterostyly, in which the styles are either too long or too short as compared to the stamens cannot exhibit autogamy.


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