Which one of the following pairs is not correctly matched?

Options

A. Streptococcus - Clot buster
B. Papaver - Tranquillizers
C. Trichoderma - Biocontrol agent
D. Rhizobium - Biofertilizer

Answer

To solve the question of which pair is not correctly matched, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Option A: Streptococcus - Streptokinase**
- Streptococcus is a bacterium that produces an enzyme called streptokinase. This enzyme is used as a clot buster in medical treatments to dissolve blood clots.
- **Conclusion:** This pair is correctly matched.

2. **Option B: Peppa Bird - Tranquilizers**
- The Peppa bird refers to the poppy plant, which is known for producing opiates like morphine and heroin. However, while heroin can have sedative effects, it is not classified as a tranquilizer in the same sense as barbiturates or other medications used to treat anxiety and depression.
- **Conclusion:** This pair is not correctly matched.

3. **Option C: Trichoderma - Biocontrol Agent**
- Trichoderma is a genus of fungi that is used as a biocontrol agent. It helps in controlling plant diseases by inhibiting pathogens.
- **Conclusion:** This pair is correctly matched.

4. **Option D: Rhizobium - Biofertilizer**
- Rhizobium is a symbiotic bacterium that fixes atmospheric nitrogen into ammonia, which is then utilized by plants. This process enhances soil fertility, making Rhizobium a biofertilizer.
- **Conclusion:** This pair is correctly matched.

### Final Answer:
The pair that is not correctly matched is **Option B: Peppa Bird - Tranquilizers**.

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