Question

In bisexual flowers maturation of gynoecium before androecium is known as ......

Answer 1

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In bisexual flowers maturation of gynoecium before androecium is known as protogyny.

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Answer 2

In bisexual flowers maturation of Gynoecium before Androecium is known as Protandry.

Explanation:

A condition in bisexual flower in which the male part of the flower called as androecium gets matured before the female part of the flower called gynoecium or vice versa in order to prevent self-fertilization is called as protandry.

It is the natural method employed by the bisexual flowers to prevent self-fertilization. The same phenomenon is known in animals by different names called as protogyny. The Protandry is also called as Dichogamy.