Question

which organelle should be listed under \plant only\ in the diagram? centriole vacuole lysosome chloroplast

Explanation:

Chloroplasts are organelles found only in plant cells, which are responsible for photosynthesis. Lysosomes are in animal cells and some plant - like protists. Vacuoles are in both plant and animal cells (but larger in plant cells). Centrioles are mainly in animal cells. So chloroplasts belong to the "Plant Only" category.

Answer:

Chloroplast