NEET BIOLOGY

Detailed explanation-1: -The only answer that is not an adaptation of a root hair cell is (B). The adaptation that root hair cells do not have is that they contain many chloroplasts that photosynthesize and provide glucose for the root.

Detailed explanation-2: -Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria, which release energy from glucose during respiration in order to provide the energy needed for active transport.

Detailed explanation-3: -These cells are located underground. This means that they do not contain chloroplasts (there is no light for photosynthesis).

Detailed explanation-4: -Explanation for correct option: The function of root hairs is to collect water and mineral nutrients present in the soil and take this solution up through the roots to the rest of the plant. As root hair cells are absent in root cap water absorption does not take place.

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.