LIFE SCIENCE

Detailed explanation-1: -The soil is at a lower concentration than the root hair cells. Hence, water moves from the soil to the root hair cells by the process of osmosis. Osmosis is the movement of water molecules from a region of low concentration to high concentration through a semipermeable membrane.

Detailed explanation-2: -Turgor pressure: When (a) total water potential (total) is lower outside the cells than inside, water moves out of the cells and the plant wilts. When (b) the total water potential is higher outside the plant cells than inside, water moves into the cells, resulting in turgor pressure (p), keeping the plant erect. 3.

Detailed explanation-3: -Water moves into the roots from the soil by osmosis, due to the low solute potential in the roots (lower s in roots than in soil). This intake o f water in the roots increases p in the root xylem, driving water up.