Question

What is lignin? Where is it present.​

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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Answer 2

Answer:

Lignin is a class of complex organic polymers that form key structural materials in the support tissues of vascular plants and some algae.

Lignins are particularly important in the formation of cell walls, especially in wood and bark, because they lend rigidity and do not rot easily.

Chemically, lignins are cross-linked phenolic polymers.

**Hope it helps because I just know this much**