Question

homework - reactions of photosynthesis
the diagram shows elodea generating oxygen.
diagram: sun, bubbles of oxygen gas, rubber stopper, glass tube, water, test tube, elodea
in what organelle did that oxygen originate?
○ mitochondrion
○ chloroplast
○ vacuole
○ nucleus

Explanation:

The problem is about the organelle where oxygen from photosynthesis in Elodea originates. Photosynthesis occurs in chloroplasts, where water is split to release oxygen. Mitochondria are for cellular respiration, vacuoles store substances, and the nucleus contains genetic material—none of these produce oxygen via photosynthesis. So the correct organelle is chloroplast.

Answer:

B. chloroplast