BIOL 1001 Chapter : Chapter 6 Bones
Document Summary
All writing in red refers to first appearance in all animals. K. anamalia: larval stage: immature stage that does not resemble the adult, juvenile stage: immature stage resembling a small adult w/o mature reproductive organs. Coelomates: body cavity lined with mesoderm, mesoderm around gut connected by mesenteries, cavity lined with peritoneum, allows for independent gut movement, allows for growth of internal organs, 2 type: protosomes & deuterostome, fig 32. 8a. See excel workbook (protosomes & deuterostome: fig 32. 9. Phylogeny overview: for the 3 main branches of bilateral animals-lophotochozoa, Ecdysozoa, and deuterostoma the relatipnship among phyla w/in: the molecular phylogeny slipts the protostomes into 2 clades: each are different to resolve but the differences btw/n , clades: defined by shared-derived . Phylogenetics: traditional: 2 hypotheses for relationships among annelids, mollusks, and arthropods, an annelid-mollusk lineage, because they share similar larval stage, the trocophoe larva, this hypothesis is supported by molecular data, fig 32. 13.
