EVERYDAY SCIENCE

Detailed explanation-1: -All arthropods (arthro = joint, pod = foot) have jointed limbs. In most of the leg, the exoskeleton is hard, but at the joints it is softer and bendable, allowing movement in the same way that a suit of armor does.

Detailed explanation-2: -So they must periodically shed, or “molt” their exoskeletons in favor of a new one. Arthropods ("arthro” meaning joint, and “pod” meaning leg) also have jointed appendages. Lost limbs can gradually be regenerated after successive moltings.

Detailed explanation-3: -All arthropods have jointed legs, claws, and body segments! Arthropods have segmented bodies. Each body segment usually has a pair of appendages. The appendages can be antennae, wings, legs, or mouthparts!

Detailed explanation-4: -Species that have limbs fall under three main groups of animals: arthropods, such as insects and crustaceans; vertebrates, like amphibians, reptiles and mammals; and a specialized group of mollusks known as cephalopods, which includes squid, cuttlefish and octopuses.

Detailed explanation-5: -They possess an exoskeleton. They have jointed appendages. Their body is segmented. They are bilaterally symmetrical. They possess an open circulatory system.