Mary Allen
Overview: What is an insect’s exoskeleton?
An exoskeleton is a hard, protective outer layer that covers the entire body of an insect. It is made up of a tough, flexible material called chitin, which is also found in the shells of crustaceans and the beaks of cephalopods. The exoskeleton is a crucial feature for insects, providing them with a number of important functions and adaptations. It is the defining feature of the insect body plan, and plays a vital role in the survival of these diverse and abundant creatures.
Protection: How does the exoskeleton shield an insect?
One of the most significant functions of the exoskeleton is protection. It provides a physical barrier that shields the insect from physical damage and environmental hazards. The tough chitinous shell protects against predators, such as birds and other insects, and helps to prevent the insect from being crushed or damaged by external forces. The exoskeleton also provides a barrier against water loss, which is particularly important for insects that live in dry environments. Insects that live in aquatic environments have a waterproof cuticle that prevents them from becoming waterlogged and drowning. Additionally, the exoskeleton can also protect against harmful UV radiation from the sun, which can be damaging to an insect’s sensitive skin.