DENDROLOGY

Detailed explanation-1: -The air in the soil particles comes into touch with the root hairs. The oxygen in soil particles diffuses into root hair and reaches all of the root’s cells, where it is used in respiration. Diffusion allows carbon dioxide created in the root’s cells during breathing to escape through the same root hair.

Detailed explanation-2: -In root systems, oxygen (O2) in soil pores diffuses into the root hairs and gets transported to all parts of the roots.

Detailed explanation-3: -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-4: -Answer: The roots of the plants respire under the ground. Root cells get oxygen from the air present in space between the soil particles. There are several root hair present on the roots of the plants. The oxygen from the air(between soil particles) diffuses into the root hair and reaches to the cells of the roots.