Chapter 33 - Invertebrates Notes

Chapter 33 - Invertebrates Notes - KINGDOM: ANIMALIA...

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KINGDOM: ANIMALIA PHYLUM: PORIFERA (Ex: sponges) SUBKINGDOM: PARAZOA   ( No true tissues/no organs) Most primitive animal Cells are independent Sessile (non-moving) ASYMMETRY Move water in through small holes (OSTIA) out through big hole (OSCULUM) HERMAPHRODITES -make both eggs and sperm EVOLUTIONARY DEAD END- no know descendants alive today * * * * * * * * * * * * PHYLUM: CNIDARIA ( EX: jellyfish, hydra, coral, anemones) SUBKINGDOM:METAZOA (true tissues) DIPLOBLASTIC  (two germ layers) RADIAL SYMMETRY TWO FORMS           POLYP  (sessile) and  MEDUSA  (free swimming) ONE OPENING GASTROVASCULAR CAVITY Stinging cells =  NEMATOCYSTS * * * * * * * * * * * * * * * SUBKINGDOM: EUMETAZOA (true animals = 3 germ layers) ALL WORMS: INVERTEBRATE PROTOSTOMES have  BILATERAL SYMMETRY (BILATERIA) Breathe  THROUGH SKIN PLATYHELMINTHES (FLAT) NEMATODA (ROUND) ANNELIDA (SEGMENTED) ACOELOM PSEUDOCOELOM EUCOELOM < 2 opening digestive system   GASTROVASCULAR CAVITY  (Planaria)  OR  NO openings         (tapeworm) OPEN circulation EX: Planaria, flukes,  tapeworms some parasitic: Schistosomiasis (blood fluke) 2 opening digestive system OPEN  Circulation
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This note was uploaded on 02/14/2012 for the course BIO 151 taught by Professor Grinblat during the Fall '08 term at Wisconsin.

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Chapter 33 - Invertebrates Notes - KINGDOM: ANIMALIA...

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