Which of the following statement is FALSE ?

Options

A. TMV has a double stranded RNA molecule.
B. Most plant viruses are RNA viruses.
C. Bacteriophage has a double stranded DNA molecule.
D. Most animal viruses are DNA viruses.

Answer

To solve the question of which statement is FALSE, we will analyze each of the provided statements regarding viruses:

1. **TMV (Tobacco Mosaic Virus) has a double-stranded RNA molecule.**
- TMV is known to have a single-stranded RNA molecule, not a double-stranded one. Therefore, this statement is FALSE.

2. **Most plant viruses are RNA viruses.**
- This statement is TRUE. The majority of plant viruses indeed contain RNA as their genetic material.

3. **Bacteriophage has a double-stranded DNA molecule.**
- This statement is TRUE. Bacteriophages, which are viruses that infect bacteria, typically have double-stranded DNA as their genetic material.

4. **Most animal viruses are DNA viruses.**
- This statement is also TRUE. While there are many RNA viruses that infect animals, a significant number of animal viruses do have DNA as their genetic material.

Based on the analysis, the FALSE statement is the first one: "TMV has a double-stranded RNA molecule."

### Step-by-Step Solution:
1. **Identify the statements provided in the question.**
- TMV has a double-stranded RNA molecule.
- Most plant viruses are RNA viruses.
- Bacteriophage has a double-stranded DNA molecule.
- Most animal viruses are DNA viruses.

2. **Analyze each statement for accuracy.**
- **Statement 1:** TMV is a single-stranded RNA virus (FALSE).
- **Statement 2:** Most plant viruses are RNA viruses (TRUE).
- **Statement 3:** Bacteriophages have double-stranded DNA (TRUE).
- **Statement 4:** Most animal viruses are DNA viruses (TRUE).

3. **Determine which statement is false.**
- The only false statement is the first one regarding TMV.

### Final Answer:
The FALSE statement is: "TMV has a double-stranded RNA molecule."

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