NEET BIOLOGY

Detailed explanation-1: -So, the correct answer is ‘Epidermal extensions’.

Detailed explanation-2: -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-3: -The root hairs take water from the soil by a process called osmosis. In osmosis, water molecules move from a region of higher concentration to a region of lower concentration through a semi-permeable membrane. The concentration of the water molecules is lower in the root hair than in the soil.

Detailed explanation-4: -The roots of the plants help in absorption of water. Minerals present in the soil are also absorbed along with the water.

Detailed explanation-5: -Root hair cells improve plant water absorption by increasing root surface area to volume ratio which allows the root hair cell to take in more water. The large vacuole inside root hair cells makes this intake much more efficient.