The _______ have bodies that are divided into two parts: a head region that bears two pairs of appendages modified to form mouthparts,and a trunk region that often has four pairs of walking legs.

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Chelicerates, such as spiders and scorpions, have bodies that are divided into a head region with modified mouthparts and a trunk region with walking legs. Crustaceans also have two body parts, but often have more than four pairs of walking legs. Hexapods, like insects, have three body parts and six legs. Nematodes, or roundworms, are long and slender with no distinct segments or appendages. Myriapods, including millipedes and centipedes, have numerous body segments and legs, but no distinct division between head and trunk.

The _______ Have Bodies That Are Divided into Two Parts