Question

The epidermis is formed of single contimous layered cells. ... Epidermal cells of the roots commonly bear long hair-like parts that increase the total absorptive surfce area for water absorption. In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.​

Answer 1

Explanation:

In deserts, water is scarce and saving water is a major step which plants of this region have to undertake. So in many of the desert plants like Yucca, creosote, cactus, etc, the epidermis has a thick waxy coating of cutin.

This restricts the loss of water through transpiration. In desert plants, the epidermis has a thick waterproof coating that is not made of suberin, elastin or chondrin.

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.