Spirullina is

Options

A. biofertilizer
B. biopesticide
C. edible fungus
D. single cell protein

Answer

To answer the question "Spirulina is:", we will analyze the options provided and determine the correct classification of Spirulina.

### Step-by-Step Solution:

1. **Identify what Spirulina is**:
- Spirulina is a type of cyanobacteria, also known as blue-green algae. It is a biomass of these microorganisms.

2. **Understand its nutritional value**:
- Spirulina is known for its high protein content, comprising about 60-70% of its biomass. It is also rich in vitamins, minerals, and fiber, making it a highly nutritious food source.

3. **Recognize its uses**:
- Spirulina is widely consumed by humans and animals as a dietary supplement due to its nutritional benefits. It is often referred to as a "superfood" because of its health-promoting properties.

4. **Classify Spirulina**:
- Given its characteristics, Spirulina is categorized as "Single Cell Protein" (SCP). This term refers to protein derived from single-celled organisms, which is exactly what Spirulina is.

5. **Evaluate the options**:
- **Biofertilizers**: Incorrect, as Spirulina does not primarily serve as a fertilizer.
- **Biopesticides**: Incorrect, as Spirulina does not function as a pesticide.
- **Edible fungus**: Incorrect, as Spirulina is not a fungus; it is a cyanobacterium.
- **Single Cell Protein**: Correct, as Spirulina is a unicellular organism rich in protein.

6. **Conclusion**:
- The correct answer is **Single Cell Protein**.

### Final Answer:
Spirulina is **Single Cell Protein**.

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