The students can use a stomata diagram to understand the function of the whole stomatal apparatus and the cells present in it. The students can also get ideas about photosynthesis and transpiration. Stomata are tiny pores located on the epidermis of plant leaves and stems that regulate gas exchange, allowing carbon dioxide, oxygen, and water vapor to enter and exit the plant. Know what are Stomata . Learn the structure and various types of Stomata along with mechanism and stomatal transpiration at Embibe. The diagram of stomata shows how different parts of the stomata work together to help plants breathe and save water. Stomata are tiny openings on the surface of leaves that open and close as needed.