Which of the following is the most abundant carbohydrate in biosphere ?

Options

A. Starch
B. Glycogen
C. Cellulose
D. Hemicellulose

Answer

**Step-by-Step Solution:**

1. **Understanding Carbohydrates**: Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen. They are classified into simple sugars (monosaccharides) and complex carbohydrates (polysaccharides).

2. **Identifying the Options**: The options given are starch, glycogen, cellulose, and hemicellulose. Each of these is a type of carbohydrate:
- **Starch**: A storage form of glucose in plants.
- **Glycogen**: A storage form of glucose in animals.
- **Cellulose**: A structural component of plant cell walls.
- **Hemicellulose**: A component of plant cell walls, but not as abundant as cellulose.

3. **Analyzing Cellulose**: Cellulose is a polysaccharide made up of long chains of glucose units. It is a major component of plant cell walls, providing structural support.

4. **Quantifying Cellulose**: Cellulose constitutes about 33% of all vegetable matter. It is found in significant amounts in cotton (90% cellulose) and wood (50% cellulose).

5. **Conclusion**: Given that cellulose is the most abundant carbohydrate in the biosphere due to its prevalence in plant materials, the answer to the question is **cellulose**.

**Final Answer**: Cellulose is the most abundant carbohydrate in the biosphere.

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