Final answer:
Photosynthesis in plant cells occurs in chloroplasts, specifically in the mesophyll layer of leaves where gas exchange through stomata takes place.
Step-by-step explanation:
Photosynthesis in plant cells occurs in the chloroplasts. Chloroplasts are organelles within plant cells that contain chlorophyll, the green pigment responsible for capturing light energy during photosynthesis. The chloroplasts have a highly dynamic collection of folded membrane sacs called the thylakoid system, where the light reactions of photosynthesis occur.
Photosynthesis primarily takes place in the leaves of plants, specifically in a middle layer called the mesophyll. It is in this layer that the gas exchange of carbon dioxide and oxygen occurs through small openings called stomata, which are typically located on the underside of the leaf.
Learn more about Photosynthesis in plant cells