The 'endospores' are formed in the following genera

Options

A. Bacillus and Clostridium
B. Mucor and Bacillus
C. Monococcus and Clostridium
D. Saccharomyces and Clostridium

Answer

To solve the question regarding the genera that form endospores, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Endospores**:
- Endospores are highly resistant structures formed by certain bacteria in response to adverse environmental conditions. They are characterized by their thick walls and ability to withstand extreme conditions.

2. **Identifying Bacterial Genera**:
- We need to identify which genera are known for producing endospores. The most well-known genera that form endospores include **Bacillus** and **Clostridium**.

3. **Examples of Endospore Forming Bacteria**:
- **Bacillus anthracis**: This bacterium is known to cause anthrax and is a classic example of a spore-forming bacterium.
- **Clostridium tetani**: This bacterium causes tetanus and is also known for its ability to form endospores.

4. **Eliminating Non-Endospore Forming Genera**:
- Other options like **Mycorrhizae** (a type of fungus), **Monococcus**, and **Saccharomyces** (a yeast) do not produce endospores. Therefore, they can be eliminated from consideration.

5. **Conclusion**:
- The correct answer to the question is the genera that include **Bacillus** and **Clostridium**, specifically **Bacillus anthracis** and **Clostridium tetani**.

### Final Answer:
The endospores are formed in the following genera: **Bacillus** and **Clostridium**.

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