Question

Transpiration is best defined in which of the following statements :

1. loss of water by the plant
2. evaporation of water from the surface of plant
3. loss of water, as water vapour, by a plant
4. release of water by a plant into the atmosphere.

Answer 1

Option 3 is right.

The loss of water in the vapour form from the exposed or aerial parts of the plants is called as transpiration.