Question

describe the mechanism of control of stomata with proper diagram

Answer 1

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 neighboring 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 stomata open the solute concentration is reduced. This makes the water from the guard cells to move away into neighboring cells. Now, guard cells become flaccid with no water. They collapse against each other and result in the closing of stomata. 

this is known as exchange of gases..........

hope my answer is helpful to u......

Answer 2

mechanism of opening and closing of stomata
the opening of stomata : Tollywood from new neighbouring epidermal and measure failure cells enter the guard cells loading its osmotic potential and water potential this loaded water potential and osmotic potential will allow the movement of water into guard cell from neighbouring cell .
the closing of stomata : as the stomata open the showing in the solute concentration is reduced this makes the water from the guard cells to move away into the neighbouring self now cards and become felikat with know what are the colours against each other and result in the closing of stomata