"What type of coelom do they possess?", "pseudocoelomate" "What type of digestive system do they have?", "alimentary canal" "What level of organization do these organisms demonstrate?", "organ-system level" "How many tissue layers do these organisms have?", "Triploblastic" "What does the word "rotifer" mean?", "wheel bearer" "What two characteristics do these animals have?", "have jaws and a crown of cilia" "When are they first found in the evolutionary history?", "early Eocene" "What habitat are they found in?", "Freshwater" "What phylum is it in?", "Rotifera"
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