Question

What is the use of root hairs in the plant? Why do plants have root hairs?

Answer 1

Root hairs are extremely delicate, fine, and hair-like outgrowths of a plant root's region of maturation. They are the tubular extensions of the epidermis that greatly increase the surface area of the root. This increases the amount of water and nutrients that the plant can absorb from the soil. Plants grow root hairs on the tips of their roots.

Root hairs help to increase the surface area of absorption of water and nutrients from the soil.