AP BIOLOGY

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: -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-3: -Final answer: Water enters the root hair by the process of osmosis.

Detailed explanation-4: -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.

Detailed explanation-5: -The movement of water is due to the difference in the osmotic pressure. The osmotic pressure of water in roots is high and so the water enters the root hair cells. The water is transported to the other cells in the root region by osmosis.