able to produce gametes can perform photosynthesis has an organelle for movement lives as one of a colony of cells
I gave my students this multiple choice question: Which characteristic does a paramecium have in common with volvox?

Only one answer is correct among these 4 choices:
- able to produce gametes
- can perform photosynthesis
- has an organelle for movement
- lives as one of a colony of cells

Could you tell me which one is correct?

has an organelle for movement