Question

hb unit 2.1 cell energy and photosynthesis quiz 2025 (c
a granum is a
stack of chloroplasts
stack of thylakoids.
membrane enclosing a thylakoid.
photosynthetic pigment molecule.

Explanation:

In plant cells, a granum is defined as a stack of thylakoids. Thylakoids are membrane - bound compartments in chloroplasts where the light - dependent reactions of photosynthesis occur. Chloroplasts are the organelles containing grana. The membrane enclosing a thylakoid is just the thylakoid membrane, and a photosynthetic pigment molecule is something like chlorophyll which is located on the thylakoid membranes.

Answer:

stack of thylakoids.