Question

Why do you think that a thick cuticle on the outer wall of epidermis is advantageous for a plant living in the desert but disadvantageous for a plant living underwater?

Answer 1

A cuticle is a waxy covering of the epidermis that prevents water loss. It is beneficial to desert plants because it reduces excessive water loss due to transpiration, allowing the plant to thrive in dry conditions. It is harmful to underwater plants because it prevents them from absorbing water and dissolved gases from their surroundings, both of which are required for living. Thus, the cuticle is advantageous in dry environments but not for aquatic plants.