Which of the following diseases is caused by a fungus

Options

A. Small pox
B. Tuberculosis
C. Cancer
D. Black rust of wheat.

Answer

To solve the question "Which of the following diseases is caused by a fungus?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**: We need to look at the diseases listed in the options. The options are:
- Smallpox
- Tuberculosis
- Cancer
- Black rust of wheat

2. **Analyze Each Disease**:
- **Smallpox**: This disease is caused by the Variola virus, which is a virus, not a fungus. Therefore, this option is incorrect.
- **Tuberculosis**: This is an infectious disease caused by the bacterium Mycobacterium tuberculosis. Since it is caused by bacteria, this option is also incorrect.
- **Cancer**: Cancer is not caused by a fungus; it results from mutations in genes that lead to uncontrolled cell growth. Thus, this option is incorrect as well.
- **Black rust of wheat**: This disease is caused by a fungus of the genus Puccinia, specifically Puccinia graminis. Since this is a fungal disease, this option is correct.

3. **Conclusion**: After analyzing all the options, we find that the only disease caused by a fungus is the black rust of wheat.

### Final Answer:
The disease caused by a fungus is **Black rust of wheat**.

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