Question

which organelle should be listed under \both\ in the diagram?
○ centriole
○ mitochondrion
○ chloroplast
○ cell wall
(diagram labels: animal only, both, plant only)

Explanation:

To determine which organelle is in both animal and plant cells:

• Centriole: Mostly in animal cells (some lower plants), not universal for both.
• Mitochondrion: Present in both animal and plant cells (produces energy).
• Chloroplast: Only in plant cells (photosynthesis).
• Cell wall: Only in plant cells (provides structure).

Answer:

B. mitochondrion