Question

The mechanism of opening and closing a stomata in detail.

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

hey mate!!
here is ur answer

Normally,stomata are open in the day time and close during the night.The cause of the opening and closing of the stomata is a change in the turgidity of the guard cells.
The inner wall of each guard cell ,towards the pore or stomatal aperture(guard cell and subsidiary cell are together called stomatal aperture),is thick and elastic.
When tugidity increases within the two guard cells flanking each stomatal aperture or pore,the thin outer walls bulge out and force the inner walls into a crescent shape.
The opening of the stomata is also added due to Orientation of the microfibril in the cell walls of the guard cell
Cellular microfibril are oriented as it make easier to open to stoma.
when the guard cell lose turgor due to water loss the inner walls regain it's original shape and the guard cell become flacid and the stoma closes.



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