Which of the following statement is corr...

Which of the following statement is correct concerning the flow of sap in xylem of trees ?

A

In the morning sap begins to flow first in the twigs and later in the trunk

B

Flow is driven by high conc. of sugar in the vessel elements

C

Flow from the roots to the twigs would be accelerated if the leaves are removed

D

Rapid flow of water puts the xylem under a pressure much greater than atmospheric pressure.

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The correct Answer is:

A

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