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Question

In which of the following plants, pollen is released before the stigma becomes receptive in the same flower.

A
Allium
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B
Colchicum
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C
Datura
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D
Solanum
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Solution

The correct option is B Allium
Condition in which stamens mature earlier than pistils Is known as protandry. Therefore pollen is released before the stigma becomes receptive in the same flower. This condition is found in Allium. So answer is A.

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