Question

why stomata present in lower part of leaf

Answer 1

All surfaces of the leaf have some amount of stomata for regulating gas exchange for photosynthesis. However, the lower epidermis (the underside of the leaf) has more, because it is more often in the shade and so it is cooler, which means evaporation won't take place as muchStomata play an important role in photosynthesis as they allow the plant to absorb carbon dioxide from the environment. ... In a lotus plant, stomatais found on the upper epidermis of the leaf. Stomata are responsible for the exchange of gas with the surrounding atmosphere of the leaf.