Which one of the following pair is incorrectly matched ?

Options

A. Rhizobium - Root nodules of leguminous plants
B. Baculovirus - Nucleopolyhedro virus
C. Ladybird Beetles - aphids
D. Trichoderma - non - biocontrol agent

Answer

To solve the question "Which one of the following pair is incorrectly matched?", we need to analyze each pair provided in the options. Let's break it down step by step.

### Step-by-Step Solution:

1. **Identify the First Pair: Rhizobium and Root Nodules of Leguminous Plants**
- Rhizobium is a nitrogen-fixing bacterium that forms symbiotic relationships with leguminous plants.
- It induces the formation of root nodules in these plants, where nitrogen fixation occurs.
- **Conclusion**: This pair is correctly matched.

2. **Identify the Second Pair: Baculovirus and Nucleohedrovirus**
- Baculovirus is a virus that specifically targets insects and arthropods.
- It has two main genera: Nucleopolyhedrovirus (NPV) and Granulovirus.
- Nucleohedrovirus is one of the genera of Baculovirus.
- **Conclusion**: This pair is correctly matched.

3. **Identify the Third Pair: Ladybird Beetles and Aphids**
- Ladybird beetles are known to be voracious predators of aphids.
- They feed on aphids and help control their population in gardens and crops.
- **Conclusion**: This pair is correctly matched.

4. **Identify the Fourth Pair: Trichoderma and Non-Biocontrol Agent**
- Trichoderma is a genus of fungi known for its biocontrol properties.
- It is widely used to control fungal diseases in various crops and is considered a biocontrol agent.
- The statement that Trichoderma is a non-biocontrol agent is incorrect.
- **Conclusion**: This pair is incorrectly matched.

### Final Answer:
The incorrectly matched pair is **Trichoderma and Non-Biocontrol Agent**.

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