First slide

Transpiration

Question

Which of the following is not the purpose of transpiration?

Easy

A

It helps in absorption and transport of water.
B

It provides water for photosynthesis.
C

It cools the leaf surfaces by 10-15 degrees.
D

It assists in upward movement of water for guttation.

Solution

When transpiration is taking place in plants, root pressure becomes zero or not developed. Instead it develops negative hydrostatic pressure. It helps in upward movement of water due to pulling force. But guttation is due to push caused by root pressure.

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