The exoskeleton of cockroach is made up of chitin.
It protects the soft internal organs of the cockroach and provide rigidity to the body.
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Exsoskeletons of alll arthropods(cockroach) are made up of chitins.chitins is polysaccharide that contains nitrogen,a derivative of glucose,mineral salts and protien (keratin).
USES:1.provide elasticity to organism  2.resistance to stress  3.provide ability to grow and mature
ECONOMIC USE:1.medical purpose  2.industrial purpose  3.biotechnological purpose
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