Multiple choice Which organelle would you expect to find in a plant cell but not a animal cell? Smooth endoplasmic reticulum Ribosome Mitochondria Chloroplast Reveal answer Fill a bubble to check yourself D Correct answer Explanation Chloroplasts are found in plant cells where they conduct photosynthesis, but they are completely absent in animal cells. Mitochondria, ribosomes, and endoplasmic reticulum are found in both plant and animal cells.