Which of the following groups includes both spiders and horseshoe crabs?

Question

Quizplus · Accepted Answer

Spiders and horseshoe crabs both belong to the group of chelicerates, which is characterized by having two main body parts (cephalothorax and abdomen) and appendages modified into chelicerae (like fangs) and pedipalps (like claws). Insects belong to the group of arthropods, but they have three main body parts (head, thorax, and abdomen) and are characterized by having three pairs of legs and typically one or two pairs of wings. Millipedes belong to the group of myriapods, which have numerous pairs of legs and mandibles for chewing. Crustaceans belong to the group of arthropods, but they have two main body parts (cephalothorax and abdomen) and typically have paired antennae and many pairs of legs.

Which of the Following Groups Includes Both Spiders and Horseshoe