Final answer:
Cilia are hair-like structures found on the surface of some eukaryotic cells, including paramecium. They are important for facilitating locomotion and the capture of food particles.
Step-by-step explanation:
Cilia are hair-like structures found on the surface of some eukaryotic cells, including paramecium. They use a rapid, flexible, waving motion to move entire cells or substances along the outer surface of the cell. Cilia are important for paramecium because they help facilitate locomotion and the capture of food particles. By beating their cilia, paramecium can coordinate directed movements and use their organized cilia to capture and digest bacteria in their oral groove.