DENDROLOGY

TREE IDENTIFICATION

PARTS OF A TREE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The chemical that binds wood fibers together.
A
leaves
B
sap
C
cellulose
D
lignin
Explanation: 

Detailed explanation-1: -Lignin is the cementing agent that binds individual fiber cells together. Lignin is thermally stable but prone to UV degradation. Lignin is a complex hydrocarbon polymer with both aliphatic and aromatic constituents, amorphous, and hydrophobic in nature.

Detailed explanation-2: -lignin, complex oxygen-containing organic polymer that, with cellulose, forms the chief constituent of wood. It is second to cellulose as the most abundant organic material on Earth, though relatively few industrial uses other than as a fuel have been found.

Detailed explanation-3: -2 ROLE AND APPLICATIONS OF LIGNIN AS A BINDER. Lignin presents a promising alternative to the existing synthetic adhesives. Lignin shows adhesive behavior and plays the part of a binder by holding cellulose fibers together.

Detailed explanation-4: -Calcium bisulphite is used to remove lignin from wood pulp, learning behind the cellulose for paper making.

There is 1 question to complete.