Assertion: The genetic material in Tobacco mosaic virus is RNA.
Reason: RNA is a type of nucleic acid.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the assertion and reason question regarding the Tobacco mosaic virus (TMV), we will analyze both the assertion and the reason step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "The genetic material in Tobacco mosaic virus is RNA."
- This is true. Tobacco mosaic virus is indeed a plant virus, and its genetic material is composed of RNA (ribonucleic acid).

2. **Understanding the Reason**:
- The reason states that "RNA is a type of nucleic acid."
- This statement is also true. RNA is one of the two main types of nucleic acids, the other being DNA (deoxyribonucleic acid).

3. **Analyzing the Relationship**:
- Now we need to determine if the reason provided is the correct explanation of the assertion.
- While both statements are true, the reason does not explain why the genetic material of TMV is RNA. The fact that RNA is a type of nucleic acid does not provide a direct explanation for the assertion regarding TMV.

4. **Conclusion**:
- Therefore, the assertion is correct, and the reason is also correct, but the reason is not the correct explanation for the assertion.
- The correct option for this question would be that the assertion is true, the reason is true, but the reason does not explain the assertion.

### Final Answer:
- Assertion: True
- Reason: True
- Explanation: The reason is not the correct explanation of the assertion.