Endospores are thick walled, dehydrated cells formed in scarcity of nutrients. These are formed in

Options

A. Bacillus and Clostridium
B. Bacillus and Mucor
C. Clostridium and Saccharomyces
D. E. coli and Bacillus

Answer

### Step-by-Step Solution:

1. **Understanding Endospores**:
- Endospores are specialized structures formed by certain bacteria in response to unfavorable environmental conditions, particularly when there is a scarcity of nutrients. They are characterized by their thick, protective walls and dehydrated state.

2. **Identifying the Conditions for Endospore Formation**:
- Endospores are produced primarily by gram-positive bacteria, which have a thicker cell wall compared to gram-negative bacteria. This thick cell wall allows them to form a robust protective layer around the cell.

3. **Analyzing the Options**:
- The options provided are:
- A) Bacillus Clostridium
- B) Bacillus Mucor
- C) Clostridium Saccharomyces
- D) E. coli
- E) Bacillus

4. **Evaluating Each Option**:
- **Bacillus Clostridium**: Both Bacillus and Clostridium are known to form endospores and are gram-positive bacteria.
- **Bacillus Mucor**: Mucor is a fungus and does not form endospores.
- **Clostridium Saccharomyces**: Saccharomyces is a yeast and does not form endospores.
- **E. coli**: E. coli is a gram-negative bacterium and does not form endospores.
- **Bacillus**: While Bacillus can form endospores, this option is incomplete as it does not mention Clostridium.

5. **Conclusion**:
- The only option that includes organisms known for forming endospores is **A) Bacillus Clostridium**. Therefore, the correct answer is **Bacillus Clostridium**.