How does Agrobacterium tumifaciens act as a suitable vector in the biotechnological experiments ? Site an example where it has been successfully used as a vector.

Explanation

### Step-by-Step Solution:

1. **Introduction to Agrobacterium tumefaciens**:
- Agrobacterium tumefaciens is a pathogenic bacterium known for causing crown gall disease in various dicotyledonous plants. This disease is characterized by the formation of tumor-like growths (galls) on the plant.

2. **Natural Genetic Engineer**:
- This bacterium is often referred to as a "natural genetic engineer" due to its unique ability to transfer genetic material into the host plant cells. This property makes it a suitable vector in biotechnological experiments.

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