Question

In both transpiration and evaporation, water is lost in the form of vapour yet they differ, because

• A. Both transpiration and evaporation are similar but the rate of water loss in transpiration is always more
• B. Frequency of water loss is different in both of them.
• C. Transpiration is a physical process and evaporation is a physiological process.
• D. Transpiration is a physiological process and evaporation is a physical process.

Answer 1

The correct option is D Transpiration is a physiological process and evaporation is a physical process.

Transpiration is loss of water in vapor form, from living plant cells thus it is a physiological process while evaporation is loss of water from any free surface in vapor form, thus it is a physical process.