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What is an animal?

What is an animal?. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers. How do animals differ from plants?. Animals lack cell walls and have have collagen as their most abundant protein. Animals have nerve and muscle cells.

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What is an animal?

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  1. What is an animal?

  2. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers.

  3. How do animals differ from plants?

  4. Animals lack cell walls and have have collagen as their most abundant protein. Animals have nerve and muscle cells. Animals have three distinct cell junc- tions: tight junctions, desmosomes, and gap junctions.

  5. Early Embryonic Development

  6. A Traditional View of Animal Diversity Based on Body-Plan Grades

  7. Body Symmetry in Animals

  8. Body Plans of the Bilateria

  9. Protostomes vs. Deuterostomes

  10. Animal Phylogeny Based on Sequencing of SSU-rRNA

  11. Figure 47.6x Sea urchin development, from single cell to larva

  12. Cleavage in an echinoderm (sea urchin) embryo

  13. Cleavage in a frog embryo

  14. Cross section of a frog blastula

  15. Gastrulation in a frog embryo

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