What is the term for the pressure generated by the active secretion of salts and solutes from cells into the xylem sap?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
23 May 2018
Last updated
28 May 2026

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Explanation

The pressure produced when salts and other solutes are actively secreted into the xylem sap, causing water to move upwards, is known as root pressure. This is different from transpiration pull, which is caused by water evaporation from leaves, and osmotic pressure, which relates to solute concentration differences.

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