In fungi, the cell wall is mainly composed of

Options

A. Pectin
B. Cellulose
C. Hemicellulose
D. Chitin

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Walls in Different Organisms:**
- Begin by recognizing that various organisms have different compositions in their cell walls. For example, plant cell walls are primarily made of cellulose, pectin, and hemicellulose.

2. **Identifying the Components of Plant Cell Walls:**
- In plants, the cell wall is structured with cellulose microfibrils that form a network. This network is cross-linked with glycans and contains pectin and hemicellulose, which are polysaccharides.

3. **Differentiating Fungal Cell Walls:**
- It is crucial to differentiate the composition of fungal cell walls from those of plants. Unlike plants, fungi do not contain cellulose, pectin, or hemicellulose in their cell walls.

4. **Identifying the Main Component of Fungal Cell Walls:**
- The primary component of the cell wall in fungi is chitin. Chitin is a long-chain polymer of N-acetylglucosamine, which is a derivative of glucose.

5. **Conclusion:**
- Therefore, the correct answer to the question "In fungi, the cell wall is mainly composed of" is chitin.

**Final Answer:**
The cell wall in fungi is mainly composed of chitin.

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