Question

Which of the following leaf modification occurs/occur in desert areas to inhibit water loss?

1. Hard and waxy leaves
2. Tiny leaves or no leaves
3. Thorns instead of leaves

Answer 1

the correct answer is thorn instead of leaves.

Answer 2

The leaf modification that occurs in desert areas to inhibit water loss is hard and waxy leaves. This formation is called cuticle.  

The cuticle is composed of a material called 'cutin', which is wax-like containing hydroxy fatty acids. Cutincoating over the leaves reduces water loss due to transpiration.  

This modification not only prevents the permeability of materials in and out of the leaves but also prevents it from pathogenic organisms.