Explain opening and closing of stomatal …

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Explain opening and closing of stomatal pore

Posted by Swarn Shekhar Swarn 6 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 9 months ago

Mechanism of opening and closing of stomata
Opening of stomata: Solutes from neighbouring epidermal and mesophyll cells enter the guard cells lowering its osmotic potential and water potential. This lowered water potential and osmotic potential will allow movement of water into guard cells from neighbouring cells. Guard cells become turgid due to water accumulation in them which results in the opening of the guard cells.
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.

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CBSE > Class 10 > Science