AP BIOLOGY

Detailed explanation-1: -Root hairs are slender projections originating from epidermal cells that function in nutrient and water uptake as well as in anchoring the root in the soil.

Detailed explanation-2: -The hair like projections of the epidermal cells of root are called root hairs.

Detailed explanation-3: -Root hairs are long tubular-shaped outgrowths from root epidermal cells. In Arabidopsis, root hairs are approximately 10 µm in diameter and can grow to be 1 mm or more in length (Figure 1).

Detailed explanation-4: -The root hairs of plants are tubular projections of root epidermal cells and are suitable for investigating the control of cellular morphogenesis.

Detailed explanation-5: -Root hairs are unicellular elongation of root epidermis, called as epiblema. The root hairs are present in zone of cell maturation and absorb water from soil. In fact root epiblema cells are elongated as root hair for absorption. The elongation helps in increasing the surface area for absorption.