In what parts of the chloroplast does photosynthesis take place?

A chloroplast is an organelle with a double membrane covering it. The inner membrane folds inward to form lamellae, which are then stacked one on top of the other to form grana. A single chloroplast can contain several grana. The remaining cytoplasmic matrix is called stroma, and it contains additional cytoplasmic inclusions such as ribosomes and DNA fragments.

Two steps make up photosynthesis: 1. Hill's reaction, also known as the light reaction, takes place in the chloroplast's granum when light is present.

2. The dark reaction, also known as Blackmann's reaction, takes place in the stroma region of the chloroplast and is dependent on the products of the light reaction but does not directly require light to occur.

You can further explore the answer by looking at the electron microscopic structure of the chloroplast diagram found in any photosynthesis-related book.

The stroma of the chloroplast and the thylakoid membranes are the sites of photosynthesis.