DENDROLOGY

Detailed explanation-1: -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-2: -There are air pockets present between the soil particles where the trapped oxygen is present. Root hair exchange gasses to and from tiny air pockets present in soil particles. The large surface area provided by root hairs facilitates this along with absorption of water.

Detailed explanation-3: -Roots, the underground part of the plants absorb air from the air spaces present between the soil particles.

Detailed explanation-4: -Plant roots breathe under the earth’s surface. The air in the spaces between the soil particles provides oxygen to root cells. On the roots of the plants, there are many root hairs. The oxygen from the air diffuses through the root hair and reaches the root cells (between soil particles). More items