Cellulose is present in cell walls of

Options

A. Plantae
B. Protista
C. Fungi
D. 1 and 2

Answer

### Step-by-Step Solution:

1. **Understanding Cellulose**:
- Cellulose is a type of polysaccharide, which is a complex carbohydrate made up of glucose units. It is a key structural component in the cell walls of certain organisms.

2. **Identifying Organisms with Cellulose**:
- Cellulose is primarily found in the cell walls of plants. This is a defining characteristic of the plant kingdom (Plantae).

3. **Evaluating Other Options**:
- **Protista**: This kingdom includes a diverse group of eukaryotic organisms. While some protists may have cellulose in their cell walls, many do not, as they may contain different types of carbohydrates.
- **Fungi**: The cell walls of fungi are primarily composed of chitin, not cellulose. This distinguishes them from plants.

4. **Conclusion**:
- Based on the analysis, the correct answer to the question "Cellulose is present in cell walls of" is **plants** (option A: Plantain).

### Final Answer:
Cellulose is present in the cell walls of **plants**.

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