Which of the following describes echinoderms? They are found

Last updated: 7/7/2022

Which of the following describes echinoderms? They are found in both freshwater and saltwater environments. O Digestion occurs completely outside of the organism. Hemolymph circulates in the water vascular system. They have an exoskeleton of hard calcareous plates. Tubefeet provide motility in most species.