AP BIOLOGY

Detailed explanation-1: -Root hair cells are specialised to allow plants to absorb more water and let a plant absorb the minerals it needs to keep alive. Xylem and Phloem cells are used by the plant to transport minerals, sugar and water to other parts of the plant.

Detailed explanation-2: -Plants are able to absorb water and mineral ions from the soil through the process of osmosis. Just behind the growing tips of roots are thousands of tiny root hairs. These tiny root hairs increase the surface area of the root epidermis and are the main area of osmosis.

Detailed explanation-3: -In higher plants, water is absorbed through root hairs from the soil water. The walls of root hairs are permeable to water and are hydrophilic in nature. They contain vacuoles filled with cell sap. Absorption of water by roots takes place by two mechanism namely, active absorption and passive absorption.

Detailed explanation-4: -Roots have numerous root hairs that increase the surface area for the absorption of water and minerals. These root hairs are in contact with the water present in the soil. Water enters the cells of the root hair by the process of osmosis.

Detailed explanation-5: -Root hair cells Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.