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Q.

Which of the following is not a part of the transpiration, cohesion-adhesion and mechanism of ascent of sap ?

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a

The loss of water from the mesophyll cells, which initiates a pull of water molecules from the  neighbouring cells

b

Hydrophilic wall of narrow tracheids and xylem vessel that help to raise the column of water against the force of gravity

c

Hydrophilic wall of narrow tracheids and xylem vessel that help to raise the column of water against the force of gravity

d

The active pumping of water into the xylem of root

answer is D.

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Detailed Solution

Root pressure, in plants, force that helps to drive fluids upward into the water conducting vessels (xylem)

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