DENDROLOGY

Detailed explanation-1: -In the air spaces, the water changes state and turns from a liquid into a gas called water vapor. Because there is a higher concentration of water vapor inside the leaf than outside, the water vapor moves out of the leaf through the stomata by diffusion. This process is known as evaporation.

Detailed explanation-2: -The process of loss of water from the surfaces of leaves through evaporation is called transpiration. Water evaporates from tiny pores on the surfaces of leaves called stomata. The concentration difference is important for the diffusion of water vapor into the atmosphere from the stomata.