The flowers do not open at all is
A. Cleistogamy
B. Chasmogamy
C. Herkogamy
D. Dichogamy
Answer: Option A
Solution (By Examveda Team)
The flowers do not open at all in Cleistogamy.Cleistogamy means the formation of flowers that do not open and those flowers are classified as Cleistogamous flowers.
It is a type of automatic self-pollination of certain plants that can propagate by using non-opening, self-pollinating flowers.
Thus the production of seeds in such flowers is a result of autogamy.

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