Osmotic pressure in the leaf cells is positive during

(a) Excessive transpiration

(b) Low transpiration

(c) Excessive absorption

(d) Guttation

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1 Answers

Correct option  (a) Excessive transpiration

Explanation :

Osmotic pressure in the leaf cells is positive during excessive transpiration. Transprration is a physical and physiological process in which aerial parts of a living plant remove water in the form of vapours. 

As the water is lost from the leaf surface by transpiration, osmotic pressure of the leaf calls increases.

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