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Study Guide
Phylum Porifera |
Basal animals that lack true tissues Choanocytes (collar cells, flagellated cells that ingest bacteria and tiny food particles) Calcarea, Silicea (Sponges) |
Phylum Cnidaria |
(Hydras, jellies, sea anemones, corals) Radial symmetry, diploblastic tissue organization |
Lophotrochozoans |
A clade identified by molecular data, have the wildest range of animal body forms phylum platyhelminthes, rotifera, lophophorates, mollusca, annelida |
Phylum Platyheliminthes |
(Flatworms) Bilateral symmetry Triploblastic tissue |
Phylum Rotifers |
Wheel animals- rotifers organs systems present, including alimentary canal, asexual |
Phlyum Lophophorate |
Phronida, Ectoprocta, Brachiopoda Coelomates w/ lophophores (feeding structures bearing ciliated tentacles) |
Phylum Mollusca |
(Clams, snails, squids) Coelomates w/ 3 main body parts (muscular foot, viscral mass, mantle) coelom reudced hard shell made of calcium carbonate |
Body plans of mollusca |
class polyplacophora (chitons) class gastropoda (snails, slugs & cowries) class bivalvia (scallops, clams and oysters) class cephalopoda (squid, nautilus, octopus) |
Phylum Annelida |
(segmented worms) Coelomates w/ segmented body wall and internal organs, except digestive tract |