Question

what are Lignin?

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Answer 1

_________LIGNIN_________

➡️It is the hard and strong substances which makes the walls of the xylem vessels and tracheids...

➡️A complex organic polymer deposited in the cell walls of many plants ,making them rigid and woody.

Hope it helps you....

Answer 2

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.

Lignin fills the spaces in the cell wall between cellulose, hemicellulose, and pectin components, especially in vascular and support tissues: xylem tracheids, vessel elements and sclereid cells. ...

The crosslinking of polysaccharides by lignin is an obstacle for water absorption to the cell wall.