Question

what is protoandry and protogyny
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Answer 1

Sequential hermaphroditism (called dichogamy in botany) is a type of hermaphroditism that occurs in many fish, gastropods, and plants. Sequential hermaphroditism occurs when the individual changes sex at some point in its life.

Answer 2

when the anther matures earlier than stigma it is known as protandry

whereas when stigma matures earlier than anther it is protogyny.