Question

Condition in which flowers do not open at all

Answer 1

Answer:

Explanation:

Researchers have known since the 1930s that the leaves of plants perceive the seasons by sensing the amount of daylight and, when the time is right, trigger flowering by sending some sort of signal to the shoot tip. But the identity of this so-called “florigen” has remained mysterious

Answer 2

Answer:

I think the answer should be cleistogamy.

99% sure...