Question

20. What is lignin? Where is it present.
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Answer 1

Answer:

Lignin is a constituent of the cell walls of almost all dry land plant cell walls.

It is the second most abundant natural polymer in the world, surpassed only by cellulose.

Of the polymers found in plant cell walls, lignin is the only one that is not composed of carbohydrate (sugar) monomers.

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