Name the virus which was crystallised for the first time

Options

A. Parrot Fever Virus
B. Small Pox Virus
C. TMV
D. HIV.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the virus that was crystallized for the first time. This indicates we need to identify a specific virus and the scientist associated with its crystallization.

2. **Historical Context**: Viruses are unique entities that exhibit characteristics of both living and non-living things. They can be crystallized, which is a property typically associated with non-living substances.

3. **Identifying the Scientist**: The first scientist to crystallize a virus was W. M. Stanley. This is a crucial piece of information that connects the virus to its discovery.

4. **Year of Crystallization**: W. M. Stanley accomplished this in the year 1935. This date is significant as it marks a milestone in virology.

5. **Name of the Virus**: The specific virus that W. M. Stanley crystallized is the Tobacco Mosaic Virus (TMV). This virus is known for affecting plants, particularly tobacco.

6. **Conclusion**: Based on the information gathered, the answer to the question is the Tobacco Mosaic Virus (TMV), which was crystallized by W. M. Stanley in 1935.

**Final Answer**: The virus which was crystallized for the first time is the Tobacco Mosaic Virus (TMV).

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