Which is showing accurate pairing ?

Options

A. Syphilis - Treponema pallidum
B. AIDS - Bacillus conjugalis
C. Gonorrhoea - Leishmania donovani
D. Typhoid - Mycobacterium leprae

Answer

To determine which pairing of diseases and their causative organisms is accurate, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the diseases and their supposed causative organisms**:
- Option A: Syphilis - Treponema pallidum
- Option B: AIDS - Bacillus conjugalis
- Option C: Gonorrhea - Leishmania donovani
- Option D: Typhoid - Mycobacterium leprae

2. **Evaluate each option**:
- **Option A**: Syphilis is indeed caused by Treponema pallidum, which is a spirochete. This pairing is correct.
- **Option B**: AIDS (Acquired Immunodeficiency Syndrome) is caused by the Human Immunodeficiency Virus (HIV), not Bacillus conjugalis. This pairing is incorrect.
- **Option C**: Gonorrhea is caused by Neisseria gonorrhoeae, not Leishmania donovani, which causes leishmaniasis. This pairing is incorrect.
- **Option D**: Typhoid is caused by Salmonella typhi, not Mycobacterium leprae, which causes leprosy. This pairing is incorrect.

3. **Conclusion**: The only accurate pairing is Option A: Syphilis - Treponema pallidum.

### Final Answer:
The accurate pairing is **Syphilis - Treponema pallidum**.

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