Phylum: Echinodermata, its classification and characteristics
exclusively marine. multicellular, system grade of body organization. triploblastic, coelomate and radially symmetrical. free living, free swimming or sedentary. star shaped, oval shaped, globular, or...
Phylum : Coelenterata (Cnidaria), its classification and characteristics
multicellular with tissue grade of body organization. aquatic, mostly marine, few are found in fresh water. sedentary or free swimming. mostly radially symmetrical whereas few...
Phylum: Porifera (sponge), its classification and characteristics
Multicellular, eukaryotic with cellular grade of body organization. Aquatic, mostly marine few found in fresh water. Solitary or colonial, free living. Sedentary and sessile. May...