Transgenic plants are produced by using Ti-plasmid from

Options

A. Agrobacterium tumefaciens
B. Pseudomonas putida
C. Rhizobium leguminosarum
D. E.coli

Answer

To solve the question regarding the production of transgenic plants using Ti-plasmid, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Transgenic Plants**:
- Transgenic plants are genetically modified organisms (GMOs) that have been altered using genetic engineering techniques. This often involves the introduction of foreign DNA into the plant genome.

2. **Identify the Role of Ti-Plasmid**:
- Ti-plasmid (Tumor-inducing plasmid) is a specific type of plasmid that is found in *Agrobacterium tumefaciens*. This plasmid is responsible for transferring genes into the plant cells, leading to the formation of tumors (crown galls) in plants.

3. **Know the Source of Ti-Plasmid**:
- The Ti-plasmid is specifically associated with *Agrobacterium tumefaciens*, which is a bacterium known for its ability to transfer DNA to plant cells.

4. **Evaluate the Options Provided**:
- Option 1: *Agrobacterium tumefaciens* - Known for Ti-plasmid.
- Option 2: *Pseudomonas putida* - Not associated with Ti-plasmid.
- Option 3: *Rhizobium leguminosarum* - Not associated with Ti-plasmid.
- Option 4: *E. coli* - Not associated with Ti-plasmid.

5. **Select the Correct Answer**:
- Based on the understanding that Ti-plasmid is derived from *Agrobacterium tumefaciens*, the correct answer is **Option 1: *Agrobacterium tumefaciens***.

### Final Answer:
Transgenic plants are produced by using Ti-plasmid from **Agrobacterium tumefaciens**.

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