Biology, asked by pratham7748, 9 months ago

Explain root pressure theory with reference to the ascent of sap in plants

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Answered by Anonymous

5

The theory was put forward by Priestley (1916). Root pressure is a positive pressure that develops in the xylem sap of the root of some plants. It is a manifestation of active water absorption. Root pressure is observed in certain seasons which favour optimum metabolic activity and reduce transpiration.

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