Assertion : Nucleopolyhedro virus is called a baculovirus.
Reason: Nucleopolyhedro virus is employed to control Bacillus bacteria.

Options

A. If both Assertion and Reason are true and Reason is a correct explanation of Assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of Assertion
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Nucleopolyhedrovirus is called a baculovirus." This is true. Nucleopolyhedrovirus (NPV) is indeed classified under the family Baculoviridae, which is commonly referred to as baculoviruses. These viruses are known for their ability to infect insects, particularly caterpillars.

2. **Understanding the Reason**: The reason provided states that "Nucleopolyhedrovirus is employed to control Bacillus bacteria." This statement is false. Nucleopolyhedrovirus is not used to control Bacillus bacteria; rather, it is primarily used as a biocontrol agent against insect pests, such as the cotton bollworm. Bacillus bacteria are a different group of microorganisms and are not the target of NPV.

3. **Conclusion**: Since the assertion is true and the reason is false, we can conclude that the correct answer to the question is that the assertion is true, but the reason is false.

4. **Final Answer**: The correct option is that the assertion is true and the reason is false.

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