Caudal tuft of Paramecium is

Options

A. Tactile in nature
B. Locomotory in function
C. Helps in conjugation
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Caudal Tuft**: The caudal tuft of Paramecium is a structure located at the posterior end of the organism. It consists of a group of longer cilia compared to the other cilia that cover the body of Paramecium.

2. **Function of the Caudal Tuft**: The caudal tuft is primarily tactile in nature. This means that it functions as a sensory organ, allowing the Paramecium to detect touch and changes in its environment.

3. **Evaluating the Options**:
- **Option A**: "Tactile in nature" - This is correct since the caudal tuft is indeed sensitive to touch.
- **Option B**: "Locomotory in function" - This is incorrect because locomotion in Paramecium is primarily achieved through the smaller cilia that cover its body, not the caudal tuft.
- **Option C**: "Helps in conjugation" - This is also incorrect as the caudal tuft does not play a role in the process of conjugation in Paramecium.
- **Option D**: "All of the above" - This option is incorrect since only the first option is true.

4. **Conclusion**: After evaluating all the options, the correct answer to the question is that the caudal tuft of Paramecium is tactile in nature.

**Final Answer**: The caudal tuft of Paramecium is tactile in nature.

---