Question

what causes the opening and closing d stomato
during transpiration​

Answer 1

Explanation:

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Answer 2

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✒During transpiration the movement of potassium ions in and out of the guard cells causes the opening and closing of stomata. Due to this the water potential in the guard cells decreases and water moves inside the guard cells causing them to swell up and become turgid which in turn causes the opening of stomata pores.

✒Stomata are pores in the leaf that allow gas exchange where water vapor leaves the plant and carbon dioxide enters. Special cells called guard cells control each pore's opening or closing. When stomata are open, transpiration rates increase; when they are closed, transpiration rates decrease.

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