Chain of rod shaped bacteria is
(a) Streptococcus
(b) Streptobacillus
(c) Staphylococcus
(d) Staphylobacillus

Options

A. Streptococcus
B. Streptobacillus
C. Staphylococcus
D. Staphylobacillus

Answer

To determine the answer to the question about the chain of rod-shaped bacteria, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Bacterial Shapes**:
- Bacteria can have various shapes, primarily categorized into cocci (spherical) and bacilli (rod-shaped).

2. **Identifying the Options**:
- The options provided are:
- (a) Streptococcus
- (b) Streptobacillus
- (c) Staphylococcus
- (d) Staphylobacillus

3. **Analyzing the Options**:
- **Streptococcus**: This term refers to a chain of spherical bacteria (cocci). Therefore, this option is not related to rod-shaped bacteria.
- **Staphylococcus**: This term refers to a cluster (like a bunch of grapes) of spherical bacteria (cocci). Thus, this option is also not related to rod-shaped bacteria.
- **Streptobacillus**: This term refers to a chain of rod-shaped bacteria (bacilli). This matches the description in the question.
- **Staphylobacillus**: This term refers to a cluster of rod-shaped bacteria. While it involves rod shapes, it does not refer to a chain.

4. **Conclusion**:
- Since the question specifically asks for a chain of rod-shaped bacteria, the correct answer is **(b) Streptobacillus**.

### Final Answer:
**(b) Streptobacillus**

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