Members of this phylum exhibit five-fold symmetry and possess an open circulatory system.
Members of this phylum exhibit five-fold symmetry and possess an open circulatory system. Though  they do not have brains, some species do have ganglia. They reproduce sexually, but many members have remarkable powers of regeneration. Some species can be cut into pieces with each piece growing back to a full organism. All members of this phylum have a water vascular system that aids in locomotion. FTP, sand dollars, sea urchins, and starfish, are all members of what invertebrate phylum?
Members of this phylum exhibit five-fold symmetry and possess an open circulatory system.
echinodermata