Weegy: The answer is B. enable members of a phylum to survive and reproduce. User: Which of the following characteristics is associated only with an endoskeleton?
A. It offers protection from predators.
B. It allows an animal to walk.
C. It consists of fluids held in a cavity.
D. It grows with the animal. Weegy: Echinoderms were the first animals to form an endoskeleton. It is D. User: Which of the following characteristics is ... (More)