AP BIOLOGY

Detailed explanation-1: -Root hair are fine hair-like outgrowths of root epidermal cells which increase the surface area for the absorption of water and exchange of gases.

Detailed explanation-2: -Root hair, or absorbent hairs, are outgrowths of epidermal cells, specialized cells at the tip of a plant root. They are lateral extensions of a single cell and are only rarely branched.

Detailed explanation-3: -Root hair is an elongated tubular extension of an epidermal cell of a root. Root hair is unicellular, with a very thin cell wall and devoid of cuticles. This allows free movement of substances in and out of the root hair cell.

Detailed explanation-4: -Root hairs collect water and mineral nutrients that are present in the soil and take this solution up through the roots to the rest of the plant. The osmosis of water occurs in the root hair due to the presence of a high concentration of solutes in the cell sap.