Which of the following shows coiled RNA strand and capsomeres

Options

A. Retrovirus
B. Polio virus
C. Tobacco masaic virus
D. Measles virus

Explanation

To solve the question "Which of the following shows coiled RNA strand and capsomeres?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which virus shows a coiled RNA strand and capsomeres. We need to identify the characteristics of the given options.

2. **Analyze the Options**:
- **Option A: Retrovirus** - Retroviruses have RNA but are typically not described as having a coiled structure; they usually have a complex structure with an envelope.
- **Option B: Poliovirus** - Poliovirus has a single-stranded RNA, but it is not coiled; it has a more icosahedral shape.
- **Option C: TMV (Tobacco Mosaic Virus)** - TMV is known for its coiled structure of single-stranded RNA and has capsomeres that form its protein coat.
- **Option D: Measles Virus** - The measles virus has RNA and capsomeres, but it does not have a coiled RNA structure; it is more spherical.

3. **Identify the Correct Answer**: Based on the analysis, TMV (Tobacco Mosaic Virus) is the only option that has a coiled RNA strand and capsomeres. Therefore, the correct answer is **Option C: TMV**.

4. **Conclusion**: The TMV is characterized by its coiled RNA and the presence of capsomeres, making it the best answer to the question.