Granum vs. Thylakoid — What's the Difference?

A membranous structure within a chloroplast made up of stacks of thylakoids.

Thylakoids are membrane-bound compartments inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis.

(biology) A stack-like structure in plant chloroplasts that contain chlorophyll; the site of photosynthesis.

A saclike membrane in the chloroplasts of plant cells that is often arranged in stacks called grana and that is the site of the light reactions of photosynthesis.

(biology) a folded membrane within plant chloroplasts from which grana are made, used in photosynthesis