Tobacco mosaic virus is elongated rof like with size

Options

A. `300 xx 10` nm
B. `300 xx 5` nm
C. `300 xx18` nm
D. `700 xx 30` nm

Answer

To answer the question regarding the size of the Tobacco Mosaic Virus (TMV), we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Identify the Virus**: The question asks about the Tobacco Mosaic Virus, which is known to infect plants, particularly tobacco plants.

2. **Understand the Structure**: TMV is described as an elongated, rod-like virus. This shape is characteristic of many plant viruses.

3. **Determine the Size**: The size of TMV is specified as follows:
- **Length**: The length of the Tobacco Mosaic Virus is approximately 300 nanometers (nm).
- **Diameter**: The diameter (or width) of the virus is around 18 nanometers (nm).

4. **Summarize the Information**: Therefore, the Tobacco Mosaic Virus can be summarized as being elongated and rod-like, with a length of 300 nm and a diameter of 18 nm.

5. **Conclusion**: The answer to the question is that the Tobacco Mosaic Virus is elongated and rod-like, measuring 300 nm in length and 18 nm in diameter.