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J.C Bose explained the various bio -electrical responses shown by plants through

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Colesion – Tension Theory

Root pressure theory

Pressure flow hypothesis

Pulsating theory

answer is D.

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Detailed Solution

The pulsating theory of ascent of sap was put forward by J. C.

The pulsation theory states that water is absorbed by the plants due to the metabolic activity of living cells which are in constant state of rythmatic pulsation.

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