An animal that has a hemocoel, muscles attached to the inside of a rigid exoskeleton, and a complete digestive tract would most likely be a(n)

Question

Quizplus · Accepted Answer

Arthropods have a hemocoel (an open body cavity), muscles attached to their exoskeleton, and a complete digestive tract. Nematodes have a pseudocoelom instead of a hemocoel and their muscles are not attached to their exoskeleton. Annelids have a coelom instead of a hemocoel and their muscles are attached to their body wall instead of their exoskeleton. Mollusks have a coelom and a muscular foot, but do not have an exoskeleton. Arrow worms do not have an exoskeleton, a hemocoel, or muscles attached to their body wall.

An Animal That Has a Hemocoel, Muscles Attached to the Inside