Question

What is transpiration in plants ?​

Answer 1

Answer: Transpiration  is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.

Explanation: Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism.

Answer 2

$\Huge{\red{\underline{\textsf{Transpiration\::-}}}}$

◓ Loss of water in the form of water vapour from the aerial part of the plants is called as transpiration.

◓ Process of transpiration is essential evil by Curtis. Process of transpiration is unavoidable by stewards.

◓ As a result of transpiration process cooling effect is produced on the surface of leaf.

$\large{\underline{\boxed{\gray{\bf Stomatal\:Index = \dfrac{S}{S + E}\times 100 \%}}}}$

where S = number of stomata per unit area.

E = Epidermal cells per unit area.

◓ Transpiration has been classified into 3 types. Based on position where maximum amount of $\sf H_2O$ is lost :-

• (a) Stomatal transpiration (90%)

• (b) Cuticular transpiration (9%)

• (c) Lenticular transpiration (1%)