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During conjugation, bacteria attach by m...

During conjugation, bacteria attach by means of

A

Flagella

B

Pili

C

Cilia

D

Hair.

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**Step-by-Step Solution:** 1. **Understanding Bacterial Conjugation**: Conjugation is a process of sexual reproduction in bacteria where genetic material is exchanged between two bacterial cells. This process involves a donor bacterium (F-positive) and a recipient bacterium (F-negative). 2. **Identifying the Structures Involved**: In conjugation, the donor bacterium possesses a structure that allows it to connect with the recipient bacterium. This structure is crucial for the transfer of genetic material. 3. **F-Plasmid Role**: The presence of the F-plasmid (fertility factor) in the donor bacterium enables it to form a specialized structure known as the conjugation tube. 4. **Conjugation Tube (Pili)**: The conjugation tube is also referred to as pili (singular: pilus). This tubular outgrowth extends from the donor bacterium and facilitates the attachment to the recipient bacterium. 5. **Conclusion**: During conjugation, bacteria attach by means of pili, which allows for the exchange of genetic material between the F-positive (donor) and F-negative (recipient) bacteria. **Final Answer**: During conjugation, bacteria attach by means of pili. ---
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