The single cell protein is obtained from all,except

Options

A. Yeast
B. Spirulina
C. Methylophilus methylotrophus
D. Toadstools

Answer

To solve the question regarding which option is not a source of single cell protein (SCP), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Single Cell Protein (SCP)**:
- Single cell protein refers to protein derived from the cells of microorganisms. These microorganisms include bacteria, algae, fungi, and yeast.

2. **Analyze the Options**:
- The question provides several options, and we need to determine which one does not produce single cell protein.

3. **Evaluate Each Option**:
- **Option 1: Yeast** - Yeast is a type of fungus and is commonly used to produce single cell protein.
- **Option 2: Spirulina** - Spirulina is a type of blue-green algae and is also a well-known source of single cell protein.
- **Option 3: Methylophilus Methylotrophus** - This is a type of bacteria and is used in the production of single cell protein.
- **Option 4: Toadstools** - Toadstools refer to various types of fungi, but they are not typically used for single cell protein production.

4. **Identify the Correct Answer**:
- Since yeast, Spirulina, and Methylophilus Methylotrophus are all sources of single cell protein, the option that does not belong to this category is **Toadstools**.

5. **Conclusion**:
- Therefore, the correct answer to the question is **Toadstools**.

### Final Answer:
**Toadstools**