Question

explain mechanism of opening and closing of Stomata ?​

Answer 1

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★mechanism of opening and closing of Stomata :-

☘ the cause of the opening or closing of the stomata is a change in the turbidity of the guard cell. when guard cell becomes turgid, stomata opens and when guard cells become flaccid stomata close.

☘ When osmotic concentration (OP) of guard cell is high, then guard cell becomes turgud by absorption of water through endosmosis from near by cells.

☘ when osmotic concentration of guard cells decrease then guard cell becomes flaccid. due to flaccidity of guard cell, inner thick wall of both guard cell becomes fused and stomata closes.

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Answer 2

Explanation:

Closing of stomata: As the somata open the solute concentration is reduced. This makes the water from the guard cells to move away into neighbouring cells. Now, guard cells becom flaccid with no water. They collapse against each other and result in the closing of stomata.