In humans the two different harmful species of Mycobacterium causes

Options

A. Cholera and Diarrhoea
B. Pneumoniae and Diptheria
C. Tetanus and Plague
D. Leprosy and Tuberculosis

Answer

To solve the question regarding the harmful species of Mycobacterium that affect humans, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Question**: The question asks for two different harmful species of Mycobacterium that cause diseases in humans.

2. **Recall Mycobacterium Species**: There are two well-known harmful species of Mycobacterium:
- **Mycobacterium leprae**: This bacterium is responsible for leprosy, also known as Hansen's disease.
- **Mycobacterium tuberculosis**: This bacterium is responsible for tuberculosis, a serious infectious disease that primarily affects the lungs.

3. **Evaluate the Options**: The options provided in the question should be evaluated to see which one includes leprosy and tuberculosis as the diseases caused by Mycobacterium species.
- **Option 1**: Cholera and diarrhea (not caused by Mycobacterium)
- **Option 2**: Pneumonia and diphtheria (not caused by Mycobacterium)
- **Option 3**: Tetanus and plague (not caused by Mycobacterium)
- **Option 4**: Leprosy and tuberculosis (both caused by Mycobacterium species)

4. **Select the Correct Option**: Based on the evaluation, the correct answer is **Option 4**, which states that leprosy and tuberculosis are caused by Mycobacterium leprae and Mycobacterium tuberculosis, respectively.

### Final Answer:
The two different harmful species of Mycobacterium that cause diseases in humans are **Mycobacterium leprae (causing leprosy)** and **Mycobacterium tuberculosis (causing tuberculosis)**.

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