Question

Absorption of water from the soil through the roots is increased when:

• A. Transpiration is increased.
• B. Photosynthesis is increased.
• C. Respiration is increased.
• D. Transpiration is decreased.

Answer 1

The correct option is A Transpiration is increased.

According to the transpiration pull theory, loss of water from aerial parts due to transpiration is a physical process and the loss of water generates the pulling force. Water is transported as a continuous column in the xylem due to cohesive and adhesive forces exerted by water molecules. The loss of water due to transpiration is equal to the amount of water absorbed from the soil. More the loss of water by transpiration, more is the absorption of water from the soil.

So, correct answer is option A.