Which of the following statements is false ?

Options

A. TMV has a double - stranded RNA molecule.
B. Most plant viruses are RNA viruses.
C. The bacteriophage has a double - stranded DNA molecule.
D. Most animal viruses lack ssDNA and can have dsDNA as their genetic material.

Answer

To determine which statement among the options is false, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze the first statement:**
- "TMV (Tobacco Mosaic Virus) is a double stranded RNA molecule."
- **Evaluation:** This statement is false. TMV is actually a positive single-stranded RNA virus, not double-stranded RNA.

2. **Analyze the second statement:**
- "Most plant viruses are RNA viruses."
- **Evaluation:** This statement is true. The majority of plant viruses are indeed RNA viruses.

3. **Analyze the third statement:**
- "The bacteriophage is a double stranded DNA molecule."
- **Evaluation:** This statement is true. Bacteriophages, which are viruses that infect bacteria, typically have double-stranded DNA as their genetic material.

4. **Analyze the fourth statement:**
- "Most animal viruses lack single stranded DNA and can have double stranded DNA as the genetic material."
- **Evaluation:** This statement is also true. Most animal viruses do not have single-stranded DNA; they can have double-stranded DNA or single-stranded RNA.

### Conclusion:
The false statement among the options is: **"TMV is a double stranded RNA molecule."**