EVERYDAY SCIENCE

Detailed explanation-1: -The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.

Detailed explanation-2: -Stomata are tiny openings or pores that allow the exchange of gases. They are mostly found on the under-surface of plant leaves.

Detailed explanation-3: -Stomata are pores on the surfaces of leaves that function as bio-mechanical valves which control gas exchange in plants (Raven et al., 2005). Each stoma is bordered by a pair of curved, tubular guard cells (see Figure 1) that work together to control stomatal opening and closing.

Detailed explanation-4: -Small pores present on the surface of leaves which help in exchange of gases are called stomata.

Detailed explanation-5: -The movement of gases in green plants or the gaseous exchange in plants is called diffusion and it is regulated by the stomata.