The outside of the root-hair is bathed in solutions rich in nourishment.
The nourishment passes from the outside to the inside through the delicate membrane of the root-hair.
The extent of the root-hair region will vary according to the vigour and development of the roots and the nature of the soil.
|root hair |
A hairlike outgrowth of a plant root that absorbs water and minerals from the soil. Root hairs are tubular extensions of the epidermis that greatly increase the surface area of the root. They are constantly dying off and being replaced by new ones as the root grows and extends itself into the soil.