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We know that cellulose (C6H12O6)n is the chief constituent of cell walls of plants. It is the most abundant organic substance found in nature. It is a polymer of glucose with 3500 repeating units in a chain.

1. Cellulose
2. Starch
3. Glycogen
4. Chitin

Correct answer: Cellulose

Solution

Cellulose is the correct answer as it is the primary component of plant cell walls and a polymer of glucose, unlike starch, glycogen, or chitin.

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