Chapter 32 & 33

Kingdom Animilia

Characteristics 

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Metazoans

Classification/Systematics

Body Plans

Morphological and Developmental Features

  1. Body Symmetry
  2. Number of tissue Layers
  3. Patterns of Embryonic development 

Symmetry

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Tissues

Germ Layers

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Embryonic Development
Other Morphological Characteristics

Used in classification

Molecular data suggest these features are unreliable in terms of understanding evolutionary history

Body Cavity

Coelom

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Flatworm has no mesoderm

Functions of the Coelom

Segmentation

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DO NOT worry about the number of species

Molecular views of Animal Diversity

Genes used in Molecular Systematics

Invertebrates

Phylum Porifera

Phylum Cnidaria

Phylum Ctenophora

Phylum Platyhelminthes

Phylum Rotifera

Phylum Mollusea

Phylum Annelida

Phylum Nematoda

Phylum Anthropoda

Phylum Echinodermata

Phylum Chordata

Four Critical Innovations of Chordate Body Design

  1. Notochord
  2. Dorsal, hollow nerve cord
  3. Pharyngeal gill pouches
  4. Post-anal tail

Notochord

Dorsal, hollow nerve cord

Pharyngeal gill pouches

Post-anal Tail

Humans

Notochord
Nerve cord
Pharyngeal Pouches
Post-anal Tail

Subphylum Urochordata

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Subphylum Cephalochordata

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Revision #13
Created 28 January 2019 04:05:18 by Aaron Kimbrell
Updated 1 April 2019 05:09:42 by Aaron Kimbrell