Baculoviruses are/have

Options

A. Pathogens that attack insects and other arthropods
B. Members of genus Nucelopolyhedrovirus that are never used as biocontrol agents
C. Species-specific, broad spectrum insecticides
D. Few negative impects on plants, mammals, birds, fishes or even on non-target insects

Answer

**Step-by-Step Solution:**

1. **Understanding Baculoviruses**: Baculoviruses are a family of viruses known for their ability to infect insects and some arthropods. They are specifically pathogenic to these organisms.

2. **Biological Pest Control**: Baculoviruses are utilized as biological pest control agents. This means they are employed to manage pest populations in agriculture and horticulture.

3. **Insecticidal Properties**: These viruses possess insecticidal properties, meaning they can kill insects that they infect. This makes them effective in controlling pest populations.

4. **Narrow Spectrum**: Baculoviruses are classified as narrow-spectrum viruses. This means they specifically target certain species of insects rather than a wide range of organisms.

5. **Evaluating Options**:
- **Option 1**: "Pathogens that attack insects and other arthropods" - This is correct as baculoviruses specifically infect insects and some arthropods.
- **Option 2**: "Members of genus Nucleopolyhedroviruses that are never used as biocontrol agents" - This is incorrect because baculoviruses are indeed used as biocontrol agents.
- **Option 3**: "Species-specific broad-spectrum insecticides" - This is incorrect; they are not broad-spectrum but narrow-spectrum.
- **Option 4**: "Few negative impacts on plants, mammals, birds, fishes or even on target insects" - This is also incorrect as baculoviruses primarily target insects and have minimal effects on non-target species.

6. **Conclusion**: Based on the evaluation of the options, the correct answer is **Option 1**: "Pathogens that attack insects and other arthropods."

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