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what causes the opening and closing of stomata?

@Nitish, Hitesh has given a correct answer.

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 @Hitesh, we really appreciate your contributions to this forum, Keep posting!!

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Dear student

Potassium ions play a role in the opening and closing of stomata by changing the concentration of ions in the guard cells. When the potassium ions are in the guard cells, water also flows in the guard cells because of osmosis and the stomata open. When the potassium ions are out of the guard cells, water also flows out of the guard cells because of osmosis and the stomata close.

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thank u mam

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thankx 4 thumps up

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