Leaf Cross Section - Biology Diagram

A leaf’s cross-section gives a view of four layers of a leaf, upper epidermis, palisade layer, spongy layer, and lower epidermis. Here is a biology diagram of the cross-section of a leaf. The student can see the chloroplast's presence in the leaf's palisade layer, where most photosynthesis occurs. The leaves also have a stoma that controls the water content.