30-introanimoutl

30-introanimoutl - 1) directional terms (i) dorsal ventral...

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Biology 3 Lecture: Intro to Animal Diversity (SBM9: Ch 30) © 2011 copyright Marta D. de Jesus I. Overview: what makes an animal, an animal? A. General characteristics 1. 2. 3. 4. 5. 6. 7. 8. 9. zygote -> embryo---------> blastula -> gastrula ----------> larva -------------> adult 10. 1. hypotheses about origins a. from protists b. monophyletic vs. polyphyletic group? 2. When did animals appear? a. Pre-Cambrian/Cambrian boundary ~ 600 mya b. Ediacaran fauna c. why all the phyla in Cambrian? C. Evolutionary trends in bodies 1. symmetry a. b. d. bilateral symmetry
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Unformatted text preview: 1) directional terms (i) dorsal ventral (ii) anterior posterior/caudal (iii) superior/cephalic inferior 2. development of true tissues a. gastrulation 1) diploblastic 2) triploblastic b. in triploblastic embryos: type of coelom 1) acoelomate 2) pseudocoelomate 3) true coelom 3. coelomate differences a. blastula cleavage b. blastopore c. coelom formation 4. skeletons (trend) 5. terrestrial 6. larval forms 7. current hypothesis of the family tree Great PBS series on major groups of animals: The Shape of Life http://www.pbs.org/kcet/shapeoflife/index.html...
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30-introanimoutl - 1) directional terms (i) dorsal ventral...

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