Hi!
Lignin is a chemical substance which is a part of the complex tissue in secondary cell walls. They act as a cementing material and makes the cell wall hard and forms a tough layer in them.
Suberin is a waxy , waterproof fatty chemical ?substance found in cell wall of many plant (most of them are dead cells) . It is dominantly found in cork cells
Note : Write it as Lignin instead of legnin.
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