Which one of the following is a CORRECT statement ?

Options

A. 'Bt'' in ''Bt- cotton'' indicates that it is a genetically modified organism produced through biotechnology.
B. Somatic hybridization involves the fusion of two complete plant cells carrying desired genes.
C. RNAi takes place in all eukaryotic organisms as a method of cellular defense.
D. Golden rice is vitamin C enriched rice.

Answer

To solve the question, we need to identify which statement about the scientists and their contributions to virology is correct. The question asks for the correct statement among the options provided.

### Step-by-Step Solution:

1. **Identify the Contributions of Louis Pasteur**:
- Louis Pasteur is known for developing the first vaccines for various diseases, but he did not coin the term "virus." Instead, he worked on vaccines for diseases such as rabies and anthrax.

2. **Determine Who Coined the Term "Virus"**:
- The term "virus" was coined by the Dutch scientist Martinus Beijerinck. He recognized that certain infectious agents could pass through filters that retained bacteria, leading him to propose the term "virus."

3. **Examine Iwanowski's Contribution**:
- Dmitri Ivanovsky was the first to identify the cause of tobacco mosaic disease, which was later confirmed to be caused by the Tobacco Mosaic Virus (TMV). He was instrumental in recognizing that the infectious agent was not a bacterium.

4. **Review Stanley's Work**:
- Wendell Stanley was the first to crystallize the Tobacco Mosaic Virus, which helped in understanding the structure of viruses. His work confirmed the viral nature of TMV.

5. **Summarize the Findings**:
- Based on the contributions:
- Louis Pasteur did not coin the term "virus."
- Martinus Beijerinck coined the term "virus."
- Dmitri Ivanovsky discovered the TMV.
- Wendell Stanley crystallized the TMV.

6. **Identify the Incorrect Pair**:
- The incorrect pair is the one that attributes the coining of the term "virus" to Louis Pasteur instead of Martinus Beijerinck. Therefore, the correct statement would be any that accurately reflects the contributions of these scientists.

### Conclusion:
The correct statement is that Martinus Beijerinck coined the term "virus," while Louis Pasteur developed vaccines but did not coin the term. The incorrect pairing involves attributing the term "virus" to Pasteur.