AP BIOLOGY

Detailed explanation-1: -Three physical features separate insects from other arthropods: they have a body divided into three regions (called tagmata) (head, thorax, and abdomen), have three pairs of legs, and mouthparts located outside of the head capsule.

Detailed explanation-2: -All adult insects have three body parts: head, thorax and abdomen. The wings and legs are always attached to the thorax. (Spiders, which are not insects, have two body parts: head and abdomen.) Insects always have six legs.

Detailed explanation-3: -*Adult insects have six legs. *Insect bodies have three parts (head, thorax, abdomen).

Detailed explanation-4: -The three main insect body parts are head, thorax, and abdomen. The head contains the antennae, eyes, and mouthparts. The thorax is the middle body part to which the legs and wings are attached. The abdomen contains digestive and reproductive organs internally and often reproductive structures externally.