Question

Epidermal cells secrete thick and waxy layer in cactus. Why?

Answer 1

Xerophytic plants:

1. In xerophytic plants (cactus), the epidermal layer secretes a thick and waxy layer called the cuticle.
2. This layer closes the stomata and prevents water loss by the transpiration process (water-resistant layer).
3. As the cactus plant lives in a water-deficit area such thick and waxy cuticle is seen.