State one difference between cell wall of bacterium and a plant cell.

Explanation

**Step-by-Step Solution:**

1. **Identify the Organisms**: The question asks for a difference between the cell walls of two types of organisms: bacteria and plants. Bacteria are prokaryotic organisms, while plants are eukaryotic organisms.

2. **Understand the Structure of Cell Walls**:
- The cell wall of bacteria is primarily composed of **peptidoglycan**. This is a polymer that consists of sugars and amino acids, providing structural support and protection to the bacterial cell.
- In contrast, the cell wall of plants is made up of **cellulose**, which is a carbohydrate that forms a rigid structure, giving plants their shape and strength.

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