A.
top to bottom
1. epidermis
2. palisade cells
3. meophyl layer
bottom left
4. stoma
epidermis is blue
epidermis is on the top and bottom
palisade cells are brown
palisade cells have chloroplasts
chloroplasts is where photosynthesis happens
meophyll layer is spongy
mesophyll layer has large spaces between the cells
Tea leaf. Light micrograph of a cross-section through a tea (Camellia sinensis) leaf. The upper and lower epidermis on the surfaces of the leaf are blue. Under the upper epidermis are palisade cells (brown), which contain chloroplasts, the site of photosynthesis. Beneath this a spongy mesophyll layer with large spaces between the cells. At bottom left, a stoma (pore) is seen. Stomata allow gases and water to enter and leave the plant. Magnification: x230 when printed 10 centimetres wide.
https://www.sciencephoto.com/media/99249/view/tea-leaf-light-micrograph