Bacteria more resistant to radiations belong to

Options

A. Escherichia
B. Micrococcus
C. Bacillus
D. Clostridium

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks which type of bacteria is more resistant to radiation. This requires knowledge of different bacterial genera and their characteristics.

2. **Evaluate the Options**: The options provided are:
- A) Asteresia
- B) Micrococcus
- C) Bacillus
- D) Clostridium

3. **Analyze Each Option**:
- **Option A: Asteresia**: This is a gram-negative bacterium that is not known for radiation resistance. It is a facultative anaerobe, which means it does not form spores and is not particularly resistant to radiation.
- **Option B: Micrococcus**: This genus is known for its resistance to various environmental stresses, including radiation. Micrococcus species can survive in extreme conditions, making this option a strong candidate.
- **Option C: Bacillus**: While some species of Bacillus are known for their ability to form spores and can be resistant to certain stresses, they are not specifically noted for high radiation resistance compared to Micrococcus.
- **Option D: Clostridium**: This genus includes gram-positive, anaerobic bacteria that are also not particularly known for radiation resistance.

4. **Identify the Correct Answer**: After evaluating all options, the best answer is **Option B: Micrococcus**, as it is specifically known for its resistance to radiation.

5. **Conclusion**: Therefore, the bacteria that are more resistant to radiation belong to the genus **Micrococcus**.

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