- Topic: Protozoa / Unicellular Organisms / Cell Biology
Question:
The cilia in paramecium function for (A) locomotion (B) respiration (C) excretion (D) defence
Answer:
Correct Answer: (A) locomotion
- Explanation: Paramecium is a tiny, slipper-shaped organism living in water. It’s covered in hundreds of tiny hair-like structures called cilia. Think of these like tiny oars on a boat. By beating rhythmically, they propel the Paramecium through the water (locomotion) and can also help sweep food particles towards its “mouth” area. Respiration and excretion happen mainly by diffusion across its surface. While it has structures for defence (trichocysts), cilia’s primary roles are movement and feeding.
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