Do Echinoderms Have Kidneys? Echinoderms have a simple excretory system with no kidneys and use diffusion to rid their bodies of nitrogenous waste which is mainly ammonia gas. Do echinoderms have organ systems? Although most species lack respiratory and excretory organs, echinoderms do have a circulatory system and a digestive system. They generally have an
In What Different Ways Echinoderms Are Specialized? Echinoderms possess a unique ambulacral or water vascular system, consisting of a central ring canal and radial canals that extend along each arm. Water circulates through these structures and facilitates gaseous exchange as well as nutrition, predation, and locomotion. What is special about echinoderms? Echinoderms possess a unique
What Is The One Thing That All Echinoderms Have In Common? All echinoderms have one thing in common: radial symmetry. This means that the creatures have appendages (or body construction) which point outward from the center of the body like the spokes on a bicycle wheel. Furthermore, these appendages usually occur in multiples of five,