AP BIOLOGY

Detailed explanation-1: -So the correct answer is ‘ Root hairs ’.

Detailed explanation-2: -Essentially all of the water used by land plants is absorbed from the soil by roots. A root system consists of a complex network of individual roots that vary in age along their length. Roots grow from their tips and initially produce thin and non-woody fine roots.

Detailed explanation-3: -Explanation: The plants absorb water from the soil with the help of root hair through osmosis. The diffusion of water molecules through a semi-permeable membrane is called osmosis. Root hair absorbs water from soil through osmosis.

Detailed explanation-4: -Water from the soil is absorbed by the roots through a process known as osmosis. The cell membrane of the root hair cells acts as a semi-permeable membrane. The cell sap inside the vacuole is a strong solution with low water concentration.

Detailed explanation-5: -Water is absorbed by the root hair cells by a process called osmosis. The concentration of the water molecules in the soil is usually higher than it is inside the root hair cells. So water is absorbed by the root hair cells from outside.