Which one of the following is wrong for fungi

Options

A. They are eukaryotic
B. All fungi possess a purely cellulosic cell wall.
C. They are heterotrophic.
D. They are both unicellular and multicellular

Answer

To determine which statement about fungi is incorrect, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Characteristics of Fungi:**
- Fungi are classified as eukaryotic organisms. This means they have a true nucleus and membrane-bound organelles.

2. **Examine the Cell Wall Composition:**
- The cell wall of fungi is primarily composed of chitin, which is a polymer made of N-acetylglucosamine. While some fungi may contain cellulose or hemicellulose, the statement that "all fungi possess a purely cellulosic cell wall" is incorrect.

3. **Consider the Nutritional Mode:**
- Fungi are heterotrophic, meaning they obtain their nutrients from other organisms. They often exhibit saprophytic behavior, feeding on dead and decaying organic matter.

4. **Look at the Cellular Structure:**
- Fungi can be unicellular (like yeast) or multicellular (like molds and mushrooms). This statement is correct as fungi can exist in both forms.

5. **Conclusion:**
- After analyzing all the options, the incorrect statement is: "All fungi possess a purely cellulosic cell wall." This is wrong because the majority of fungi have a chitinous cell wall, not a purely cellulosic one.

### Final Answer:
The wrong statement about fungi is: **"All fungi possess a purely cellulosic cell wall."**

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