Question

What control the opening and closing of stomata

Answer 1

Explanation:

Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata. ... In figure B, the guard cells have lost water, which causes the cells to become flaccid and the stomatal opening to close. This may occur when the plant has lost an excessive amount of water.

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Answer 2

Answer:

abscisic acid is responsible for it . absicic acid release k+ ion which help in opening and closing of stomata by changing its turger pressure