NEET BIOLOGY

Detailed explanation-1: -An exoskeleton is a hard covering that supports and protects the bodies of some types of animals. The word exoskeleton means “outside skeleton.” Many invertebrates, or animals without backbones, have exoskeletons. Insects are the largest group of animals that have an exoskeleton.

Detailed explanation-2: -The exoskeleton is the hard outer shell (nonliving layer) of an insect, in contrast with the endoskeleton of humans and other mammals.

Detailed explanation-3: -An exoskeleton (from Greek éxō “outer” and skeletós “skeleton") is an external skeleton that supports and protects an animal’s body, in contrast to an internal skeleton (endoskeleton) in for example, a human.

Detailed explanation-4: -An exoskeleton is a key feature of arthropods, a category of animals that includes insects, spiders, and crustaceans. Grasshoppers, cockroaches, ants, bees, cicadas, scorpions, lobsters, shrimp, black widows, snails and crabs are all examples of animals with exoskeletons.

Detailed explanation-5: -invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. More than 90 percent of all living animal species are invertebrates.