The fungus that may disease in human beings is

Options

A. Puccinia
B. Aspergillus
C. Cystopus
D. Rhizopus

Answer

To solve the question regarding which fungus may cause disease in human beings, we can follow these steps:

### Step 1: Analyze the Options
We have four fungi listed as options. We need to evaluate each one to determine if it can cause diseases in humans.

### Step 2: Evaluate Each Fungus
1. **Paxinia**: This fungus is known to be an obligate parasite that primarily affects crop plants, causing rust diseases. It does not cause diseases in humans.
- **Conclusion**: Incorrect option.

2. **Aspergillus**: This genus of fungi is known for producing aflatoxins, which are toxic and carcinogenic compounds. Aflatoxins can lead to cancer in humans and other health issues.
- **Conclusion**: Correct option.

3. **Cystopus**: This fungus is responsible for causing white rust disease in plants. It does not have any known pathogenic effects on humans.
- **Conclusion**: Incorrect option.

4. **Rhizopus**: This genus includes species that can cause diseases in plants, such as fruit rot. While some species can cause infections in humans (like Rhizopus oryzae), they are not as commonly associated with human disease as Aspergillus.
- **Conclusion**: Incorrect option for this question's context.

### Step 3: Final Decision
After evaluating all the options, we find that **Aspergillus** is the only fungus listed that is known to cause diseases in humans, specifically through its production of aflatoxins.

### Answer
The fungus that may cause disease in human beings is **Aspergillus**.

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