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17 Cards in this Set
- Front
- Back
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Protostomes
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Lophotrochozoa
Ecdysozoa |
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Deuterostomes
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Echinodermata
Chordata |
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choanoflagellates
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single celled
out group for multicellularity |
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Acelomorpha
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outgroup for coelomates
bilateria |
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Coelomates
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Protostomes (first mouth)
Deuterostomes (second mouth) |
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Acoelomate
Pseudocoelomate Coelomate |
no cavity
false cavity true cavity |
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Common bilateria traits
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multicellularity
tissues, triploblast bilateral symmetry cephalization |
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Lophotrochozoa
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Platyhelminthes
Mollusca Annelida others, rotifera |
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Ecdysozoa
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Arthropods
Nematoda Tardigrades |
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Phylum Platyhelminthes
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acoelomate
flatworms - possible primitive member Lophotrochozoa |
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Phylum Annelida
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600 myo
segmentation earthworms leech polychates internal fertilization Lophotrochozoa |
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Phylum Mollusca
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shell, mantle(secrets shell), radula(feeding), muscular foot
Polyplacophora (chitons), Bivalvia, Cephalopoda, Gastropoda Lophotrochozoa |
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Phylum Arthropods
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one million species
Trilobites, Arachnids, Crustaceans, Uniramians(insects) modified segments hemocoel- reduced coelom exoskeleton, jointed appendages, fused and modified segments, metamorphosis, molting external fertilization Ecdysozoa |
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Phylum Nematoda
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Pseudocoelomate
Cylindrical body roundworms cuticle, epidermis Ecdysozoa |
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Phylum Tardigrades
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water bears
small, water dwelling Ecdysozoa |
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Phylum Echinoderms
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radial symmetry
external fertilization tube feet, water vascular system sea; stars, urchins, dollars, cucumbers Deuterostome |
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Phylum Chordates
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Notochord
dorsal hollow nerve cord muscular postanal tail gill slits Deuterostome |
