Question

machnism of open stomata and close stomata in brief

Answer 1

The opening and closing of stomata is regulated by guard cell.

When water enters the guard cell, the guard cell swell causing the stomata to open.

Similarly stomata closed when the guard cell shrank.

Hope it helps :)

Answer 2

The opening and closing of the pore is a function of the guard cells. The guard cells swell when water flows into them, causing the stomatal pore to open. Simillarly the pore closes if the guard cells shrink