Question

Which stem adaptation is most helpful in protecting a plant from disease

Answer 1

The outer layer of a plant—analogous to our skin and also called the epidermis—is the first defense to keeping pathogens out.

Step-by-step explanation:

The epidermis itself is shielded by additional layers on certain plant parts: bark on a tree, a waxy cuticle on leaves. Plants also produce chemicals that are toxic to pathogens or to insects.