The mechanism of opening and closing of guard | vedclass

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(A) The modern and most widely accepted theory for the opening and closing of stomata is the $K^+$ (Potassium ion) pump theory,proposed by Levitt. Acc

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Entry and exit of potassium ions in guard cells

Vedclass · Answer

(A) The modern and most widely accepted theory for the opening and closing of stomata is the $K^+$ (Potassium ion) pump theory,proposed by Levitt. According to this theory,the accumulation of $K^+$ ions in the guard cells leads to a decrease in water potential,causing water to enter the cells via osmosis. This results in an increase in turgor pressure,which causes the guard cells to swell and the stomatal pore to open. Conversely,the exit of $K^+$ ions leads to water loss,a decrease in turgor pressure,and the closing of the stomata.

The mechanism of opening and closing of guard cells is primarily explained by which of the following theories?

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