Question

Phenomenon not associated with root pressure is
(1) Sap exudation
(2) Bleeding
(3) Guttation
(4) Transpiration
The answer given is transpiration. Explain why??​

Answer 1

Root pressure occurs in the xylem of some vascular plants when the soil moisture level is high either at night or when transpiration is low during the day. When transpiration is high, xylem sap is usually under tension, rather than underpressure, due to transpirational pull.

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