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This Concept Map, created with IHMC CmapTools, has information related to: 11.6.8 PHYLUM ECHINODERMATA_GROUP 1, 11.6.8 PHYLUM ECHINODERMATA DESCRIBE UNIQUE CHARACTERISTICS, 11.6.8 PHYLUM ECHINODERMATA can be classifed into 5 classes HOLOTHUROIDEA (SEA CUCUMBER), 11.6.8 PHYLUM ECHINODERMATA can be classifed into 5 classes ECHINOIDEA (SEA URCHIN), UNIQUE CHARACTERISTICS ???? MOST START OFF AS BILATERALLY SYMMETRICAL LARVAE LATER BECAME RADIALLY SYMMETRICAL ADULT, UNIQUE CHARACTERISTICS ???? REPRODUCTION SEXUALLY BUT SEVERAL SPECIES CAN ALSO REPRODUCTIVE ASEXUALLY, UNIQUE CHARACTERISTICS ???? SIMPLE ANIMALS,LACKING A BRAIN AND COMPLEX SENSE ORGANS, UNIQUE CHARACTERISTICS ???? MARINE ORGANISM THAT ARE TRIPOBLASTTIC, COELOMATE AND UNSEGMENTED, 11.6.8 PHYLUM ECHINODERMATA can be classifed into 5 classes OPHIUROIDEA (BRITTLESTAR), UNIQUE CHARACTERISTICS ???? SOME ARE CARNIVOURS AND SCAVENGE THE OCEAN FLOOR,OTHER MAINLY FILTER FEEDER, UNIQUE CHARACTERISTICS ???? DISTINCT CHARACTERISTIC PRESENCE OF AN INTERNAL SKELETON COVERED WITH SPINE AND SKIN, 11.6.8 PHYLUM ECHINODERMATA can be classifed into 5 classes ASTEROIDEA (STARFISH), 11.6.8 PHYLUM ECHINODERMATA can be classifed into 5 classes CRINOIDEA (FEATHERSTAR), UNIQUE CHARACTERISTICS ???? THE UNIQUE TO ENCHINODERM IS THE WATER VASCULAR SYSTEM