Which one of the following pairs is not correctly matched

Options

A. Streptomyces - Antibiotic
B. Serratia - Drug addiction
C. Spirulina - Single cell protein
D. Rhizobium - Biofertiliser

Explanation

To determine which pair is not correctly matched, we will analyze each option provided in the question:

1. **Streptomyces - Streptomycin**:
- Streptomyces is a genus of bacteria known for producing antibiotics, and one of the well-known antibiotics it produces is streptomycin.
- **Conclusion**: This pair is correctly matched.

2. **Serratia - Drug Addiction**:
- Serratia is a genus of bacteria, and it is not associated with drug addiction. This pairing is incorrect as Serratia does not refer to any drug or substance related to addiction.
- **Conclusion**: This pair is not correctly matched.

3. **Spirulina - Single Cell Protein**:
- Spirulina is a type of cyanobacteria (often referred to as blue-green algae) that is used as a dietary supplement and is known for being a rich source of protein, thus it is used as a single-cell protein.
- **Conclusion**: This pair is correctly matched.

4. **Rhizobium - Biofertilizers**:
- Rhizobium is a genus of bacteria that forms symbiotic relationships with legumes, helping in nitrogen fixation, which enhances soil fertility. Therefore, it is indeed used as a biofertilizer.
- **Conclusion**: This pair is correctly matched.

After analyzing all the pairs, the only incorrect match is:

**Final Answer**: Serratia - Drug Addiction (This pair is not correctly matched).

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