Xanthomonas citri contains

Options

A. Single polar flagellum
B. Bipolar flagella
C. Tuft of flagella
D. No flagella.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about "Xanthomonas citri," which is a specific type of bacteria.

2. **Understand the Characteristics**: Xanthomonas citri is known to be a gram-negative bacterium. It is rod-shaped and belongs to the class of proteobacteria.

3. **Motility**: The question focuses on the type of flagella present in Xanthomonas citri. Flagella are tail-like structures that enable bacteria to move.

4. **Analyze the Options**:
- Option 1: Single polar flagellum
- Option 2: Bipolar flagellum
- Option 3: Tuft of flagella
- Option 4: No flagella

5. **Correct Identification**: Xanthomonas citri is known to be motile due to the presence of a single polar flagellum. This means that it has one flagellum located at one end of the bacterium.

6. **Conclusion**: Based on the characteristics and motility of Xanthomonas citri, the correct answer is **Option 1: Single polar flagellum**.

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