Question

Epidermal cells of which part of plant often secrete a waxy water resistance layer on their outer surface? 

(a) Aerial parts only

(b) Roots only

(c) Both aerial parts and roots

(d) Neither aerial parts nor roots

Answer 1

(a) Aerial parts only

Epidermal cells of aerial parts of plant often secrete a waxy water resistant layer on their outer surface, known as cuticle. It reduces the water loss through transpiration in xerophytic plants.