Question

In desert plants,epidermis is covered by waxy substances.can you think why?

Answer 1

In the xerophytes(desert plants) the epidermis is covered with waxy coating and is multilayered to prevent transpiration and loss of water.

Answer 2

In desert ares temperature is very high and the plants will not receive that much water because of the insufficient rain.they have very little amount of water.So to prevent the transpiration it's epidermis is covered with a waxy coating.