All sea stars are in theClass Asteroidea. Asteroidea have a water vascular system, rather than blood. A sea star draws seawater into its body via amadreporite(a porous plate, or sieve plate), and moves it through a series of canals. The water provides structure to the sea star's body,...
Which of the following best describes the route of water into the water vascular system of a starfish? A. Water enters through the madreporite into the ring canal and from thence into the radial canals to the ampullae and finally into the tube feet. B. W Which of the following carries bl...
The byssal threads that help the animals attach to surfaces have been studied as "glue" substances for industrial and surgical arenas. They have offered insight into how artificial tendons can be created in the medical field. In addition to humans, the following creatures eat mussels: starfish, ...