Most abundant water insoluble polysaccharide

Options

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

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the most abundant water-insoluble polysaccharide. This means we need to identify which polysaccharide is both abundant and does not dissolve in water.

2. **Analyzing the Options**:
- **Hemicellulose**: This is a polysaccharide found in plant cell walls, but it is not the most abundant water-insoluble polysaccharide.
- **Cellulose**: This is known to be the most abundant polysaccharide in plants and is a major component of the plant cell wall.
- **Pectin**: This is a polysaccharide that is soluble in water, particularly in hot water, and is not the answer.
- **Lignin**: While it is present in plant cell walls, it is not classified as a polysaccharide and is also not the most abundant.

3. **Identifying the Correct Answer**: Among the options, cellulose stands out as the most abundant water-insoluble polysaccharide. It provides structural strength to plant cells and is crystalline in nature, which contributes to its insolubility in water.

4. **Final Conclusion**: Based on the analysis, the most abundant water-insoluble polysaccharide is **cellulose**.