Definition
An 'arthropod' is an invertebrate animal having an exoskeleton, a segmented body, and jointed appendages π·οΈ. This group includes insects, arachnids (spiders, scorpions), crustaceans (crabs, lobsters), and myriapods (centipedes, millipedes). They are the most diverse group of animals on Earth π. They have adapted to nearly every environment. They play crucial roles in ecosystems.