Write the mechanism of opening and closing of stomata
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The opening of stomata: Solutes from neighbouring epidermal and mesophyll cells enter the guard cells lowering its osmotic potential and water potential. ... The closing of stomata: As the stomata open the solute concentration is reduced. This makes the water from the guard cells to move away into neighbouring cells.
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Explanation:
→ During transpiration the movement of potassium ions in and out of the guard cells causes the opening and closing of stomata. At night K+ ions move out of them and water potential increases in the guard cells which causes water to move out of the cell and making them shrunk and closing the stomata pores.
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