Viruses of genus Nucleopolyhedrovirus are employed as

Options

A. Gobar gas producers
B. Biological control agents
C. Anaerobic sludge digesters
D. Antibiotics

Answer

**Step-by-Step Solution:**

1. **Identify the Genus**: The question refers to viruses of the genus Nucleopolyhedrovirus. This genus is also known as Baculovirus.

2. **Understand the Function**: Baculoviruses are known for their specificity and effectiveness in controlling certain pests, particularly insects. They are often used in biological control.

3. **Evaluate the Options**: The options provided include:
- Gober gas producers
- Biological control agents
- Anaerobic sludge digesters
- Antibiotics

4. **Select the Correct Option**: Among the options, Baculoviruses are specifically recognized for their role as biological control agents. They are used to manage pest populations in agriculture, making them effective in controlling plant pathogens.

5. **Conclusion**: Therefore, the correct answer is that viruses of the genus Nucleopolyhedrovirus are employed as biological control agents.

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