In algae cell wall is composed of:

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about the composition of the cell wall in algae. Algae are simple, photosynthetic organisms that can be found in both freshwater and marine environments.

2. **Understand the Cell Wall Composition**: The primary component of the cell wall in most algae is cellulose. Cellulose is a polysaccharide that provides structural support to the cell.

3. **Consider Variations**: While cellulose is the main component, some algae also have cell walls that contain glycoproteins. Glycoproteins are proteins that have carbohydrate groups attached to them, which can contribute to the structure and function of the cell wall.

4. **Function of the Cell Wall**: The cell wall serves several important functions, including providing shape, size, and structural integrity to the cell. It also offers protection against environmental stresses.

5. **Relate to Plant Characteristics**: Algae share some characteristics with plants, including the presence of a cell wall made of cellulose, which is a common feature in the plant kingdom.

**Final Answer**: In algae, the cell wall is primarily composed of cellulose, and in some cases, it may also contain glycoproteins.

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