Assertion: TMV is a rod-shaped virus.
Reason: It is made up of protein coat annd RNA.

Options

A. If both assertion and Reason are true and the Reason is the correct explanation of the assertion.
B. If both assertion and Reason are true but the reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Explanation

To solve the question regarding the assertion and reason about the Tobacco Mosaic Virus (TMV), we will analyze each part step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "TMV is a rod-shaped virus."
- This is true. TMV (Tobacco Mosaic Virus) is indeed known for its characteristic rod-like shape.

2. **Understanding the Reason**:
- The reason states that "It is made up of a protein coat and RNA."
- This is also true. TMV consists of a protein coat (capsid) and its genetic material, which is single-stranded RNA.

3. **Connecting Assertion and Reason**:
- The assertion claims that TMV is rod-shaped, and the reason provides an explanation for this shape, stating that it is made up of a protein coat and RNA.
- The structure of TMV, where the protein coat forms a long, cylindrical shape around the RNA, indeed contributes to its rod-like appearance.

4. **Conclusion**:
- Both the assertion and the reason are true.
- The reason correctly explains the assertion because the protein coat's structure is what gives TMV its rod shape.

### Final Answer:
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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