The bactria generally used for genetic engineering is :

Options

A. Agrobacterium
B. Bacillus
C. Pseudomonas
D. Clostridium

Answer

To solve the question "The bacteria generally used for genetic engineering is:", we will analyze the options provided and identify the correct answer based on their characteristics and applications in genetic engineering.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- A. Agrobacterium
- B. Bacillus
- C. Pseudomonas
- D. Clostridium

2. **Understand the Role of Each Bacteria**:
- **Agrobacterium**: This is a soil bacterium known for its ability to transfer DNA to plant cells. Specifically, *Agrobacterium tumefaciens* is commonly used in genetic engineering because it carries a tumor-inducing plasmid (Ti-plasmid) that can integrate into the plant genome.
- **Bacillus**: While some species of *Bacillus* are used in biotechnology, they are not primarily known for genetic engineering in plants.
- **Pseudomonas**: This genus includes various species that are important in environmental biotechnology but are not typically used for genetic engineering.
- **Clostridium**: This genus includes anaerobic bacteria that are not commonly used in genetic engineering.

3. **Evaluate the Key Features of Agrobacterium**:
- *Agrobacterium tumefaciens* is specifically known for its ability to transfer a segment of its DNA (T-DNA) into the plant cells, which can then be integrated into the plant's genome. This characteristic makes it a valuable tool in genetic engineering for creating genetically modified plants.

4. **Conclude the Answer**: Based on the analysis, the bacteria that is generally used for genetic engineering is **Agrobacterium**.

### Final Answer:
The bacteria generally used for genetic engineering is **A. Agrobacterium**.

---