Question

Description: Explain the mechanism of stomatal transpiration on the basis of Potassium ion exchange theory. I want to make a big assignment Plzz tell according to that.

Answer 1

Answer:

Potassium is an important macronutrient for plants. Potassium ions cause turgor movement of guard cells.

Gain of potassium ions by guard cells causes a decrease in water potential of guard cells which leads to inflow of water into the guard cells. This makes guard cells turgid and they swell. Increase in turgidity of guard cells opens the stomatal pore.

Movement of potassium ions out from guard cells results in an increase in water potential, they lose water due to exosmosis, become flaccid and stomatal pore closes.

This mechanism of stomatal opening and closing was first stated by Levitt.

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Answer 2

Answer:

you may search in google or refer ncert and any state board textbook