Food poisoning and gas forming rod- shaped bacterium is

Options

A. Shigella
B. Salmonella
C. Clostridium
D. Escherichia coli.

Answer

To determine which bacterium is responsible for food poisoning and is a gas-forming rod-shaped organism, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Characteristics of the Bacteria**:
- We need to look for a bacterium that is rod-shaped (bacillus) and is known for causing food poisoning.
- Additionally, it should be capable of producing gas.

2. **Examine the Options**:
- **Shigella**: This is a rod-shaped bacterium known for causing dysentery but is not typically associated with gas formation.
- **Salmonella**: This is also a rod-shaped bacterium that causes food poisoning, but it does not primarily produce gas.
- **Clostridium**: This is a gram-positive, rod-shaped bacterium that is known for causing food poisoning and is also a gas-forming organism. It is responsible for diseases such as botulism and can produce gas during fermentation.
- **Hysteria coli**: This seems to be a misspelling of Escherichia coli (E. coli), which can cause food poisoning but is not primarily known for gas formation in the context of food poisoning.

3. **Determine the Correct Answer**:
- Based on the characteristics and the information provided, **Clostridium** is the only bacterium among the options that fits the description of being a gas-forming rod-shaped bacterium responsible for food poisoning.

4. **Conclusion**:
- Therefore, the answer to the question is **Clostridium**.

### Final Answer:
The food poisoning and gas-forming rod-shaped bacterium is **Clostridium**.

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