Volvox colonies produce gametes. Volvox cells undergo conjugation. Volvox colonies produce single-celled offspring. Volvox cells reproduce by vegetative budding.
I gave my students this multiple choice question: Paramecium and volvox can both reproduce sexually. How is sexual reproduction in volvox different than sexual reproduction in paramecium?

Only one answer is correct among these 4 choices:
- Volvox colonies produce gametes.
- Volvox cells undergo conjugation.
- Volvox colonies produce single-celled offspring.
- Volvox cells reproduce by vegetative budding.

Could you tell me which one is correct?

Volvox colonies produce gametes.