Question

what are membrane-bound compartments within the chloroplast called? stroma thylakoids chlorophyll

Explanation:

To solve this, we analyze each option:

• Stroma: The fluid - filled space in the chloroplast, not membrane - bound compartments.
• Thylakoids: These are membrane - bound compartments (sac - like structures) within the chloroplast, often stacked to form grana.
• Chlorophyll: A pigment, not a membrane - bound compartment.

Answer:

B. Thylakoids