"What characteristic is responsible for the branching off of Cnidarians from the other animals?", "radial symmetry" "What level of organization do they demonstrate?", "tissue-level organization" "How many tissue layers do these organisms have?", "diploblastic (epidermis & endodermis)" "What 2 body forms do these organisms demonstrate?", "polyp & medusa" "What is the name of the central cavity?", "gastrovascular cavity" "What is the name of the stinging capsule these organisms use to capture food?", "nematocysts" "When did this phylum show up in evolutionary histroy?", "580 million years ago in Precambrian" "Where is this phyla found?", "freshwater and ocean" "What type of digestion do they have?", "Extra- and intracellular" "Type of asexual reproduction", "budding" "What is the name of the noncellular "layer"?", "Mesoglea" "Type of Nervous system", "nerve net"
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