Fungi can be parasites on-

Options

A. Animals
B. Human being
C. Plants
D. All

Answer

**Step-by-Step Solution:**

1. **Understanding Fungi**: Fungi belong to a separate kingdom in biological classification. They are primarily multicellular organisms, with the exception of some unicellular forms like yeast.

2. **Cell Structure**: Fungi are classified as eukaryotes, meaning their cells contain a nucleus and other organelles, distinguishing them from prokaryotes (like bacteria).

3. **Nutrition Mode**: Fungi are heterotrophic organisms. This means they cannot produce their own food through photosynthesis (as they lack chloroplasts) and must obtain nutrients from other sources.

4. **Types of Heterotrophs**: Fungi can be categorized based on their mode of obtaining food:
- **Saprophytic**: These fungi feed on dead organic matter.
- **Parasitic**: These fungi derive nutrients from living organisms.

5. **Parasitic Fungi**: Parasitic fungi can infect and derive nutrients from various living organisms. This includes:
- **Humans**: Some fungi can cause infections in humans.
- **Plants**: Many fungi are known to be plant pathogens, causing diseases in crops and other plants.
- **Animals**: Certain fungi can also infect animals.

6. **Conclusion**: Since fungi can be parasites on humans, animals, and plants, the correct answer is that fungi can be parasites on all of the mentioned options.

**Final Answer**: Fungi can be parasites on animals, human beings, and plants.

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