DENDROLOGY

Detailed explanation-1: -The stomata/lenticels are responsible for exchange of substances through a plant. Thus, exchange occurs through the process of diffusion. Diffusion in the process of movement of substance from a region of higher concentration to a region of lower concentration.

Detailed explanation-2: -The gas exchange in plants takes place through stomata, and the process is called diffusion. The stomata are found in all the aerial plants and not in the roots. Epidermal cells present in the stomata surrounding the guard cells of the stoma are called subsidiary cells.

Detailed explanation-3: -Diffusion is a process in which transport is driven by a concentration gradient. Gas molecules move from a region of high concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.

Detailed explanation-4: -Final answer: Diffusion of gases in plants occurs through stomata, lenticels, and intercellular spaces.

Detailed explanation-5: -Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata. Guard cells control the size of the stomata so that the leaf does not lose too much water in hot, windy or dry conditions.