Question

The diffusion of water vapours through aerial parts of the plants is called as

• A. Osmosis
• B. DPD
• C. Transpiration
• D. All of the above

Answer 1

Answer: (C)

Transpiration

Transpiration is defined as loss of water as gas or vapours from aerial parts, like leaves through the stomatal pore. It has the cooling effect on the plant leaves. It is called as a necessary evil as a lot of water absorbed by the roots is lost through transpiration.