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How do echinoderms and chordates differ developmentally from all the other annual phyla we’ve looked at this semester? What trait distinguishes chordates from any other phylum? Nematodes and annelids are both commonly referred to as “worms” Mow could you quickly tell whether an organism nematode or an annelid? Compare the feeding mechanisms of the classes of Mollusca. The class Insecta within the Arthropods phylum is hugely diverse. What may have caused this huge burst of diver group? Arthropod body types vary in the number of segments. Which groups that we looked at last week have the most Which have the least? Which phylum or class from last week do you consider to be the most interesting and why? Cite specific ecological traits that you learned from last week, not from common knowledge.