read the following statements w.r.t tobacco mosaic virus. (a) it is rod like elongated virus which is 3000 A long and 180 A in diameter. (b) it consists of 2130 capsomeres, arranged helically to form the capsid. (c) its genetic material is ds RNA (d) its RNA consists of 6400 nucleotides (e) Nucleotide Capsomeres ratio is 3: 1. select the correct option

Options

A. (a), (b), (c), (d) &(e)
B. (a), (b), (d) & (e)
C. (b), (c), (d) & (e)
D. only(a) & (e)

Answer

To solve the question regarding the statements about the Tobacco Mosaic Virus (TMV), we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement (a)**: "It is rod-like elongated virus which is 3000 A long and 180 A in diameter."
- **Analysis**: This statement is true. TMV is indeed a rod-shaped virus, and its dimensions are approximately 3000 angstroms (or 300 nanometers) in length and 180 angstroms (or 18 nanometers) in diameter.

2. **Statement (b)**: "It consists of 2130 capsomeres, arranged helically to form the capsid."
- **Analysis**: This statement is also true. TMV has a capsid made up of 2130 capsomeres that are arranged in a helical structure.

3. **Statement (c)**: "Its genetic material is ds RNA."
- **Analysis**: This statement is false. TMV has single-stranded RNA (ss RNA) as its genetic material, not double-stranded RNA.

4. **Statement (d)**: "Its RNA consists of 6400 nucleotides."
- **Analysis**: This statement is true. The RNA of TMV is composed of approximately 6400 nucleotides.

5. **Statement (e)**: "Nucleotide Capsomeres ratio is 3:1."
- **Analysis**: This statement is true. Given that there are 6400 nucleotides and 2130 capsomeres, the ratio of nucleotides to capsomeres can be calculated as follows:
- Ratio = Number of nucleotides / Number of capsomeres = 6400 / 2130 ≈ 3:1.

### Conclusion:
- The correct statements are (a), (b), (d), and (e).
- The incorrect statement is (c).

### Final Answer:
The correct option includes statements (a), (b), (d), and (e) as true, while (c) is false.

---