EVERYDAY SCIENCE

Detailed explanation-1: -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-2: -In arthropods, chitin is used together with various proteins to form the exoskeleton which they all have in common. The Arthropoda are a very old group of organisms and appear about 550 million years ago very early in the fossil record.

Detailed explanation-3: -All arthropods have a hard exoskeleton made of chiton, a type of protein. This shell provides protection for the animals, and gives support for the attachment of the arthropod’s muscles.

Detailed explanation-4: -The exoskeleton of insects is composed of hard chitin, which is a polymer of acetylglucosamine and quite resistant to many chemicals.

Detailed explanation-5: -Arthropod Armor The bodies of arthropods are supported, not by internal bones, but by a hardened exoskeleton made of chitin, a substance produced by many non-arthropods as well.