Which vector has employed for introducing nematode-specific genes in infected tobacco plants?

Explanation

To answer the question regarding which vector is employed for introducing nematode-specific genes in infected tobacco plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Problem**: The question asks for a specific vector used to introduce nematode-specific genes into tobacco plants that are infected by nematodes.

2. **Identifying the Organism**: Nematodes are roundworms that belong to the phylum Aschelminthes. They infect tobacco plants and reduce their ability to absorb water.

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