Naked DNA virus is

Options

A. Polio Virus
B. Adenovirus
C. Reovirus
D. Ribovirus.

Answer

To determine which of the options is a naked DNA virus, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Naked Virus":**
- Naked viruses are those that do not have a protein coat (capsid) surrounding their genetic material. This means they consist solely of nucleic acid (either DNA or RNA) without any protective protein layer.

2. **Identify the Genetic Material:**
- Naked viruses can contain either DNA or RNA as their genetic material. In this case, we are specifically looking for a naked DNA virus.

3. **Analyze Each Option:**
- **Option 1: Poliovirus**
- Poliovirus is known to be a naked virus, but it contains single-stranded RNA (not DNA). Therefore, this option is incorrect.
- **Option 2: Adenovirus**
- Adenovirus is a naked virus that contains double-stranded DNA. This fits the criteria for a naked DNA virus, making this option a potential correct answer.
- **Option 3: Reovirus**
- Reovirus is also a naked virus, but it contains double-stranded RNA. Thus, this option is incorrect.
- **Option 4: Ribovirus**
- Ribovirus is not a recognized category of viruses, so this option is also incorrect.

4. **Conclusion:**
- After analyzing all the options, the only virus that qualifies as a naked DNA virus is **Adenovirus**.

### Final Answer:
**Adenovirus** is the naked DNA virus.