Question

In desert plants there is a thick waxy coating of cutin why

Answer 1

In xerophytic or desert plants epidermis is multilayer with thick coating of curing to prevent loss of water in the process of transpiration

Answer 2

Answer:

Epidermal cells on the aerial parts of the plant secrete a waxy, water-resistant layer on their outer surface. It checks the loss of water, mechanical injury and invasion by parasitic fungi. ... In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.