Bacteriophage gets attached to the host cell with the help of

Options

A. tail sheath
B. tail fibres
C. spikes
D. collar.

Explanation

**Step-by-Step Solution:**

1. **Understanding Bacteriophages**: Bacteriophages, or phages, are viruses that specifically infect bacteria. They have a unique structure that allows them to attach to host cells.

2. **Identifying Bacteriophage Structure**: A bacteriophage consists of several key components:
- **Head**: Contains the genetic material (either DNA or RNA).
- **Collar**: Connects the head to the tail.
- **Sheath**: Provides energy (ATP) for the phage.
- **Tail Fibers**: Long structures that are crucial for attachment to the host cell.

3. **Role of Tail Fibers**: The tail fibers are specifically designed to recognize and bind to the surface of bacterial cells. They play a critical role in the attachment process.

4. **Attachment Process**: When a bacteriophage encounters a bacterial cell, the tail fibers grip onto the surface of the bacteria. This attachment is essential for the phage to inject its genetic material into the host cell.

5. **Conclusion**: The correct answer to the question is that bacteriophages get attached to the host cell with the help of **tail fibers**.

**Final Answer**: Bacteriophage gets attached to the host cell with the help of **tail fibers**.

---