* Chloroplasts: These are the sites of photosynthesis. They contain chlorophyll, the pigment that absorbs light energy, and other components necessary for the light-dependent and light-independent reactions of photosynthesis.
* Thylakoids: These are membrane-bound compartments within chloroplasts that are arranged in stacks called grana. They contain chlorophyll and other pigments that capture light energy.
* Stroma: This is the fluid-filled space surrounding the thylakoids in chloroplasts. It contains enzymes for the Calvin cycle (light-independent reactions of photosynthesis) and other molecules involved in photosynthesis.
While other organelles are present in plant cells, these three are specifically involved in photosynthesis and are not found in animal cells.
