Question

Explain why the cohesion of water molecules helps in the ascent of water through roots of a plant.​

Answer 1

Explanation:

The cohesion–tension theory of sap ascent is shown. Evaporation from the mesophyll cells produces a negative water potential gradient that causes water to move upwards from the roots through the xylem. ... The taller the tree, the greater the tension forces needed to pull water, and the more cavitation events

Answer 2

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This is called the cohesion–tension theory of sap ascent. The cohesion-tension theory explains how water moves up through the xylem. ... The decrease creates a greater tension on the water in the mesophyll cells, thereby increasing the pull on the water in the xylem vessels.