Unformatted text preview: h Protostomes: 2 major lineages (monophyletic group) 1. Lophotrochozoa 2. Ecdysozoa (growth by molting) Lophotrochozoa: 1. platyhelminthes (flatworm): acoelomate (no coelom/ fluid filled tube) --> move by cillia therefore no coeloem is needed. Los s 2. Rotifera: similar to stentor __. but underwent gastrulation so although tiny, it's multicellular complex organism 3. Annelida (segmented worms): have coelom that acts as hydrostatic skeleton. (have ganglia that are spread out through out 4. mollusca: have mantle that normally secretes shell (so don't need hydrostatic skeleton) a. chitons\ b. bivalves c. chepalopods d. gastropods...
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This note was uploaded on 04/25/2010 for the course BIOLOGY BIO153 taught by Professor Cordon during the Fall '10 term at University of Toronto.
- Fall '10