Most abundant organic compound on earth is

Options

A. protein
B. cellulose
C. lipids
D. steroids

Explanation

To answer the question "Most abundant organic compound on earth is," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Organic Compounds**: Organic compounds are primarily made of carbon and are essential for life. They include carbohydrates, proteins, lipids, and nucleic acids.

2. **Identifying Common Organic Compounds**: Among the various organic compounds, we need to identify which one is the most abundant.

3. **Considering Carbohydrates**: One of the most abundant types of organic compounds on Earth is carbohydrates, particularly cellulose. Cellulose is a polysaccharide that forms the structural component of plant cell walls.

4. **Cellulose as the Most Abundant Organic Compound**: Cellulose is produced in large quantities by plants through the process of photosynthesis and is a significant component of the biomass on Earth. It is estimated that cellulose constitutes a large portion of the organic carbon on the planet.

5. **Conclusion**: Therefore, the most abundant organic compound on Earth is cellulose.

### Final Answer:
The most abundant organic compound on Earth is **cellulose**.

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