TMV possesses

Options

A. DNA
B. DNA + "Protein"
C. RNA + "Protein"
D. DNA + RNA

Answer

**Step-by-Step Solution:**

1. **Identify the Virus**: The question refers to TMV, which stands for Tobacco Mosaic Virus.

2. **Understand the Composition of TMV**: TMV is known to be a virus that infects plants, particularly tobacco. It is important to know what TMV is made of.

3. **Determine the Genetic Material**: TMV contains RNA, specifically single-stranded RNA (ssRNA). It is classified as a positive-sense single-stranded RNA virus.

4. **Analyze the Protein Component**: In addition to RNA, TMV has a protein coat that surrounds the RNA. This protein coat is known as the capsid.

5. **Count the Components**: TMV consists of single-stranded RNA (approximately 6400 bases long) and a protein coat made up of 2130 capsomers.

6. **Evaluate the Options**:
- Option 1: DNA - Incorrect, as TMV does not contain DNA.
- Option 2: DNA + Protein - Incorrect, as TMV does not contain DNA.
- Option 3: RNA + Protein - Correct, as TMV contains single-stranded RNA and a protein coat.
- Option 4: DNA + RNA - Incorrect, as TMV does not contain DNA.

7. **Conclusion**: The correct answer is that TMV possesses RNA plus protein, which corresponds to option 3.

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