Lect32_Life_Biogeography_2013_NKW

Triploblasc 3 ssue types 3 bilateral vs 2

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Unformatted text preview: ary for [email protected] [email protected] •  Organelles –  Nucleus –  Mitochondria –  Chloroplasts •  More complicated genomes –  Introns •  NEXT = [email protected] w/ @ssues and organs Key Events – [email protected] Diversifi[email protected] of Body Plans (Metazoans) •  [email protected] (2 @ssue types) vs. [email protected] (3 @ssue types) –  3 (BILATERAL) vs. 2 (ASYMMETRICAL ­ radial). –  Ectoderm and endoderm + mesoderm diploblastic 2 4/9/13 Key Events – [email protected] Diversifi[email protected] of Body Plans (Metazoans) •  Coelomates, Pseudocoelomates, Acoelomates –  Cavity from mesoderm –  Cavity –  No body cavity Key Events – [email protected] Diversifi[email protected] of Body Plans (Metazoans) Deuterostomes Protostomes Protostomes (mollusks, annelids, arthropods) vs Deuterostomes (echinoderms, choradates) Cleavage = Spiral, determinate Cleavage = Radial, indeterminate Openings during [email protected] Openings during [email protected] –  Blastopore = anus  ­ Blastopore = mouth 3 4/9/13 Age of metazoa •  Ediacaran fauna – ~ 630 ­...
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This note was uploaded on 02/02/2014 for the course ECOL 335 taught by Professor Reinthal during the Spring '10 term at Arizona.

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