Question

what are the functions of guard cells​

Answer 1

The functions of guard cells in stomata are as follows-

• They open and close the stomatal pore .They swell when water flows into them ,causing the stomatal pore to open .Similarly the pore closes if the guard cells shrink.

• They protect the stomatal pore.

• They help to regulate transpiration. (In desert plants the stomata mostly remains closed in daytime when they have obtained the required CO2).

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Answer 2

what are the functions of guard cells.

1. Allow gas exchange.
2. Regulate the rate of transpiration.
3. Controlling water loss within a leaf.
4. Regulate opening & closing of stomata.