TIP is

Options

A. Tuber inducing protein
B. Tuber inducing priciple
C. Tumour inducing protein
D. Tumour inducing principle

Answer

**Step-by-Step Solution:**

1. **Understanding the Acronym TIP**: The question asks what TIP stands for. We need to analyze the options provided:
- Tuber Inducing Protein
- Tuber Inducing Principle
- Tumor Inducing Protein
- Tumor Inducing Principle

2. **Identifying the Correct Option**: We need to determine which of these options is related to plant pathology, specifically regarding tumors in plants.

3. **Researching Tumor Inducing Principle**: The correct option is "Tumor Inducing Principle." This term is associated with the disease caused by the bacterium Agrobacterium, which leads to crown gall disease in plants.

4. **Historical Context**: The concept of the Tumor Inducing Principle was proposed by scientist Edwin Braun over a century ago. He identified that certain factors in Agrobacterium lead to the formation of tumors in plants.

5. **Understanding the Mechanism**: Although the specific factor responsible for inducing tumors (later identified as the TI plasmid) was not known at the time of Braun's research, the term "Tumor Inducing Principle" refers to the general phenomenon of tumor formation due to Agrobacterium infection.

6. **Conclusion**: Based on the information gathered, the correct answer to the question "TIP is" is "Tumor Inducing Principle."

**Final Answer**: TIP is the Tumor Inducing Principle.

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