Syphilis causing Treponema pallliadum belongs to the group

Options

A. Rickettsiae
B. Bacillus
C. Actinomycetes
D. Spirillum.

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The organism in question is Treponema pallidum, which is known to cause syphilis.

2. **Classify the Organism**: Treponema pallidum is classified as a spirochete, which is a type of bacterium characterized by its spiral shape.

3. **Determine the Group**: Among the options provided (Rickettsia, Bacillus, Actinomycetes, Spirulum), we need to identify which group Treponema pallidum belongs to.

4. **Analyze the Options**:
- **Rickettsia**: This group includes bacteria that are typically transmitted by arthropod vectors and are not spirochetes.
- **Bacillus**: This refers to rod-shaped bacteria, which do not include Treponema pallidum.
- **Actinomycetes**: This group consists of filamentous bacteria, which again do not include Treponema pallidum.
- **Spirulum**: This group includes spiral-shaped bacteria, which is where Treponema pallidum fits.

5. **Conclusion**: Treponema pallidum belongs to the group of Spirulum, making option 4 the correct answer.

**Final Answer**: Treponema pallidum belongs to the group of Spirulum.

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