the walls of guards cells have :
(A) uniform thickening
(B) angular thickening
(c) tangential thickening
(D) differential thickening
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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).
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:
A. Uniform thickening
Explanation:
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