What are the sex organs provided in some bacteria ?

Options

A. Sex pili
B. Plasmid
C. Circular DNA
D. Gametes

Answer

**Step-by-Step Solution:**

1. **Understanding Bacterial Reproduction**: Some bacteria can reproduce sexually, which involves the transfer of genetic material between two cells.

2. **Identifying the Sex Organs**: In bacteria, the structures that act as sex organs during reproduction are called sex pili.

3. **Description of Sex Pili**:
- Sex pili are hair-like structures that are unicellular and very small in size.
- They are non-flagellated, meaning they do not have flagella and thus cannot move.

4. **Role of Sex Pili in Reproduction**:
- Sex pili facilitate a process called conjugation, where two bacterial cells connect and transfer genetic material.
- They form a conjugation tube that allows for the exchange of DNA.

5. **Clarifying Other Options**:
- Plasmids are extra chromosomal DNA in bacteria but do not serve as sex organs.
- Circular DNA refers to the DNA structure in bacteria and is not a sex organ.
- Gametes are the reproductive cells that fuse to form a zygote, but they are not present in bacteria as sex organs.

6. **Conclusion**: The only structure that serves as a sex organ in some bacteria is the sex pili, which play a crucial role in the process of conjugation.

**Final Answer**: The sex organs provided in some bacteria are called sex pili.

---