A student examines the internal structure of a chloroplast and identifies stacks of flattened sacs called:
Q1. A student examines the internal structure of a chloroplast and identifies stacks of flattened sacs called:
Answer: Grana
Explanation: Grana are stacks of thylakoids containing photosynthetic pigments. Stroma is tempting because it is the fluid-filled space surrounding these stacks.