Which of the following statements is false ?

Options

A. TMV has double-stranded RNA molecule
B. Most plant viruses are RNA viruses
C. The bacteriophage has a double -stranded DNA molecule
D. Most animal virsues are DNA viruses

Answer

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

### Step-by-Step Solution:

1. **Analyze Statement A: "TNB has double-stranded RNA molecule."**
- TNB refers to Tobacco Mosaic Virus (TMV), which is known to be a positive-sense single-stranded RNA virus, not a double-stranded RNA virus. Therefore, this statement is false.

2. **Analyze Statement B: "Most plant viruses are RNA viruses."**
- This statement is true. The majority of plant viruses are indeed RNA viruses, including TMV.

3. **Analyze Statement C: "The Bacteriophage has double-stranded DNA molecule."**
- This statement is also true. Bacteriophages, which are viruses that infect bacteria, typically contain double-stranded DNA.

4. **Analyze Statement D: "Most animal viruses are DNA viruses."**
- This statement is false. While there are many DNA viruses that infect animals, the majority of animal viruses are RNA viruses. Therefore, this statement is also false.

### Conclusion:
The false statements are A ("TNB has double-stranded RNA molecule") and D ("Most animal viruses are DNA viruses"). However, since the question asks for one false statement, the most directly incorrect statement is A.

### Final Answer:
**The false statement is: "TNB has double-stranded RNA molecule."**

---