Mesophyll is the green material of a leaf that allows the plant to enact the process of photosynthesis. It consists of two different types of material that contain specific cells for biological processes.
The mesophyll is typically separated into two different types of materials called palisade and spongy parenchyma. The leaf is formed primarily of these materials. The palisade parenchyma contains cells with a high number of chloroplasts, which are necessary to the process of photosynthesis. The chloroplasts perform the process of converting energy from the sun into sugars which fuel the plant. The spongy parenchyma have large spaces between cells and contain less chloroplasts, serving as a system for gas exchanges in the plant.