Question

______ is the natural binding constituent of the cells of wood and plant stalks.

(a) Lignin

(b) Cellulose

(c) Hemicellulose

(d) Glucose

This question was posed to me in a national level competition.

My query is from Paper Basics in chapter Paper and Paper Based Packaging Materials of Food Packaging Technology

Answer 1

The correct option is (a) Lignin

To elaborate: Lignin is the natural binding constituent of the cells of wood and plant stalks. It is a highly branched, three-dimensional (3D), alkylaromatic, thermoplastic polymer of uncertain size, built up largely from substituted phenylpropane or propylbenzene units. Hydroxyl or methoxyl groups are attached to the benzene carbon atoms.