A polyhedral virus is

Options

A. TMV
B. Polio Virus
C. Adenovirus
D. Vaccinia Virus

Answer

To determine which of the given viruses is a polyhedral virus, we can analyze each option based on their structural characteristics.

### Step-by-Step Solution:

1. **Understanding Polyhedral Viruses**:
- Polyhedral viruses have a geometric shape, typically resembling a polyhedron. The most common form is the icosahedron, which has 20 triangular faces.

2. **Analyzing Each Virus**:
- **Tobacco Mosaic Virus**: This virus is known for its rod-like structure and is not polyhedral. It primarily affects plants, especially tobacco.
- **Poliovirus**: This virus is spherical but is classified as an enterovirus and does not have the typical polyhedral structure.
- **Adenovirus**: This virus is characterized by its polyhedral shape, specifically an icosahedral structure. It is a non-enveloped virus with a double-stranded DNA genome.
- **Vaccinia Virus**: This virus is large, complex, and enveloped, and does not fit the polyhedral classification.

3. **Conclusion**:
- Based on the analysis, the only virus that fits the description of a polyhedral virus is **Adenovirus**.

### Final Answer:
The correct answer is **Adenovirus**.

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