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7 Cards in this Set
- Front
- Back
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6 characteristics of animals
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1. heterotrophs
2. multicellular 3. specialized tissue cells 4. muscle and nerve cells 5. sexually reproduce 6. small mobile sperm fertilizes large egg. |
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4 ways animals develope differently from eachother
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1. cleavage (radial or spiral)
2. coelum development (body cavity) 3. body layers (biploblastic or tribloplastic) 4. symmetry |
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hole development
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1. protostomal= spiral and mouth first
2. deuterostomal= radial and anus first |
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layers
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2: ectoderm and endoderm
3: ectoderm, mesoderm, and endoderm |
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protosomes
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-spiral cleavage
-mouth developes first -schizocoelous formation of coelum (mesoderm splits) -ventral nervous system |
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deuterostomes
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-radial cleavage
-anus first -enterocoeleous formation (archemteron-hollow center- folds) |
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chordata (deuterostomes)
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-4 things all have at one point:
1. notochord 2. gills 3. dorsal hollow nerve cord 4. muscular post anal tail |
