Equations - Difference between protostomes and...

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Protostomes + some Deuterostomes + others = Bilateria Ecdysozoa + Lophotrochozoa + Platyzoa = Protostomes Chordata + Echinodermata + Hemichordata = Deuterostomes Ecdysozoa = nematods + arthropods + others Lophotrochozoa = mollusks + annelids + brachiopods + bryozoa + platyhelminthes Chordata = tunicate + cephalochordates + vertebrata Echinodermata = crinoid + starfish + brittle stars + sea cucumbers Vertebrata = jawed fish + jawless fish Jawed fish = cartilaginous fish + bony fish Bony fish = ray-finned + lobe-finned Tetrapods (lobe-finned) = amphibia + amniotes Amniotes = mammals + reptiles
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Unformatted text preview: Difference between protostomes and deuterostomes = embryonic development (blastopore becomes mouth for protostomes or anus for deuterostomes, spiral cleavage for protostomes, radial for deuterostomes) Ecdysozoa = shed exoskeleton Lophotrochozoa = trochophore larvae (bands of cilia around middle) or lophophore (ciliated tentacles around mouth) Chordata = dorsal nerve cord, notochord, pharyngeal slits, post anal tail, endostyle Echinodermata = Water vascular system, endoskeleton, start with bilateral symmetry and develop radial symmetry...
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This note was uploaded on 12/12/2008 for the course BIO G 109 taught by Professor Winkler,d. during the Fall '06 term at Cornell University (Engineering School).

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