Question

the opening and closing of stomato is aided by the peculiarities of bean shaped gurad cells mention any two such peculiarities​

Answer 1

Guard cell function

Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata.

Cyclic photophosphorylation       - Noncyclic photophosphorylation

Only photosystem I is functional - Both PS I and PS II are involved

Answer 2

Explanation:

Guard cell has inner thick wall and outer thin wall. when whater enters the guard cell, the guard cell become turgid and pulls the inner wall's causing the stomata to open.

also the presence of microfibrils which are arranged radially help to pull the guard cell thereby opening it.

to recap guard cell aids in stomatal opening and closing by it's ability to be turgid and the presence of microfibrils.