Where is granum located and what does it look like?

Granum is located within the chloroplasts of plant cells. It consists of stacks of thylakoid membranes, which are flat, disc-like structures that contain chlorophyll and other pigments. These stacks resemble a pile of coins or pancakes and are essential for the process of photosynthesis, as they facilitate the light-dependent reactions. The arrangement maximizes surface area for capturing light energy.