Lignin
Lignin explained in an easy to understand way:
Imagine trying to build a sandcastle on a windy beach; without any support, your structure quickly collapses. This is similar to how plants rely on lignin to provide strength and stability to their cell walls. Just as wooden stakes driven into the sand can keep the castle from falling apart, lignin acts like a scaffold, hardening the cell walls of vascular tissue to maintain the plant's structure and allow it to stand tall against environmental stresses.
Practice Version
Lignin: A substance that hardens the cell walls of vascular tissue in plants. Lignin. It is a complex organic polymer that strengthens and supports plant structures.