GENERAL HISTOLOGY

Detailed explanation-1: -The Arthropoda use chitin and various proteins as basic materials of their cuticle which is forming their exoskeletons.

Detailed explanation-2: -The exoskeleton is composed of a thin, outer protein layer, the epicuticle, and a thick, inner, chitin–protein layer, the procuticle. In most terrestrial arthropods, such as insects and spiders, the epicuticle contains waxes that aid in reducing evaporative water loss.

Detailed explanation-3: -Arthropods are covered with a tough, resilient integument or exoskeleton of chitin. Generally the exoskeleton will have thickened areas in which the chitin is reinforced or stiffened by materials such as minerals or hardened proteins. This happens in parts of the body where there is a need for rigidity or elasticity.

Detailed explanation-4: -Exoskeletons of arthropods have a complex polysaccharide called chitin. It is a homopolymer made up of N-acetyl glucosamine.

Detailed explanation-5: -Assertion :The exoskeleton of arthropods is made up of complex polysaccharide called chitin. Reason: Plant cell walls are made of cellulose.