Pilli are employed by bacteria for

Options

A. Locomotion
B. Sexual contact
C. Asexual reproduction
D. Location of prey.

Answer

**Step-by-Step Solution:**

1. **Understanding Pili**: Pili are hair-like structures found on the surface of many bacteria. They play various roles in bacterial function.

2. **Identifying Functions of Pili**: The question asks for the specific function of pili in bacteria. The options provided are:
- Locomotion
- Sexual contact
- Asexual reproduction
- Location of prey

3. **Analyzing Each Option**:
- **Locomotion**: Pili are not primarily used for movement. Bacteria typically use flagella for locomotion.
- **Sexual Contact**: Pili, particularly sex pili, are involved in the process of conjugation, where two bacterial cells make physical contact to transfer genetic material.
- **Asexual Reproduction**: Asexual reproduction in bacteria usually occurs through binary fission, not through pili.
- **Location of Prey**: Pili do not serve the purpose of locating prey.

4. **Conclusion**: The primary role of pili, especially sex pili, is to facilitate sexual contact between bacterial cells for the transfer of genetic material. Therefore, the correct answer is that pili are employed by bacteria for **sexual contact**.

**Final Answer**: Pili are employed by bacteria for sexual contact.

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