Bio 201 F08 True lect 12v4r

Bio 201 F08 True lect 12v4r - PLEASE TURN CELL PHONES OFF...

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PLEASE TURN CELL PHONES OFF NOW PLEASE NOTE: The correct date of the Final Exam is 12/22. The date on the last version of the syllabus (v5) was incorrect. This has been corrected in the new version of the syllabus.
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Ctenophores Ctenophores: diploblasts with radial symmetry
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Ctenophores “Comb Jellies” (100% marine, free swimming, ~100 species known) Have muscle cells (“ectomesoderm”, transparent, jelly- like) Have “complete” [“one-way”] gut Mouth->anus Swim with oral Side leading Plankton predators Ctenes – plates of fused cilia Tentacles with colloblasts (sticky cells to catch prey)
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Mnemiopsis Mnemiopsis Invaded the Black Sea (1980s) – caused collapse of Fsheries Caspian sea (1999) Baltic Sea (2006) Feed on Zooplankton Small crustaceans Fish eggs and larvae No predators to control it where it invades
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Cnidarians Cnidarians: diploblasts with radial symmetry and huge diversity
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Phylum Phylum Cnidaria Cnidaria Jellyfsh, Anthozoa (anemones + coral) , Hydrozoa All aquatic (almost all marine) ~ 11,000 living species (~ 5000 Fossil sp.) Tissue Grade oF complexity Diploblastic - have outside (ectoderm) and inside (endoderm)
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Two Body Forms Polyp - Sessile Benthic (Anthozoans live like this.) Medusa - Planktonic (Jellyfsh live like this.) Many hydrozoans have both Forms in their liFe cycles
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This note was uploaded on 04/14/2009 for the course BIO 201 taught by Professor True during the Fall '08 term at SUNY Stony Brook.

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Bio 201 F08 True lect 12v4r - PLEASE TURN CELL PHONES OFF...

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