Here's a breakdown:
* Chloroplasts: These are the organelles in plant cells responsible for photosynthesis.
* Thylakoids: These are the flattened, sac-like structures within chloroplasts. They are stacked on top of each other to form structures called grana (singular: granum).
* Grana: These stacks of thylakoids are connected by stroma lamellae, which are interconnecting membranes.
The thylakoid membrane is where the light-dependent reactions of photosynthesis take place. This is where chlorophyll and other pigments capture light energy and convert it into chemical energy.
