Root hairs develop from

The roots is covered at the apex by a thimple - like structure called the roots cap. protects the tender apex of the root as it makes its way through the soil . A few millimetres activity . The cells of this region are very small , thin - walled and with dense protoplasm . they divide repeatedly. the cell proximal to this region undergo rapid elongation and enlargement and are responsible for the growth of the root in length . this region is called the region of elongation . the cells of the elongation zone gradually differentiate and mature . Hence , this zone , proximal . From this region , some of the epidermal cells form very fine and delicate , thread - like structure called roots hairs. These roots hairs absorb water and minerals from the soil.