obtain food defend the cell attach to a surface perform conjugation
I gave my students this multiple choice question: A euglena has a flagellum and a paramecium has cilia. Both types of organelles help these organisms move through the water. However, a paramecium can also use its cilia to perform another task. What is this task?

Only one answer is correct among these 4 choices:
- obtain food
- defend the cell
- attach to a surface
- perform conjugation

Could you tell me which one is correct?

obtain food