Question

explain closing and opening of stomata?

Answer 1

Guard cells become turgid due to water accumulation in them which results in the opening of the guard cells. ... 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.

Answer 2

Guard cells regulate the opening and closing of the stomata and this regulation is brought about by the movement of water in and out of the guard cells. When water moves into the guard cells, they become flaccid. This causes the outer walls of cells bulge out and vice-versa.

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