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Definition
| Simple, Single-celled eukaryotes. |
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| Where blastula invaginates, becomes the gut. |
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Definition
| Near Animal. In between Protista and Animalia. |
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Definition
| Complex Multicellularity and Choanocytes (Sponges). |
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| A bunch of cells working together. |
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| Early cells that sponges are made of. |
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| Group of the Eumetazoa, has Radial Symmetry and two tissue layers. |
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| The same all the way around the central axis. |
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Definition
| Has radial symmetry (Jellies). |
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| Specialized cells in Cnidaria for stinging. |
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| "Harpoons" shot out to sting. |
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| Group of the Eumetazoa, Bilateral symmerty, Internal Organs, third tissue layer: Mesoderm. |
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Definition
| Has Cephalization (Flatworms). |
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Definition
| No body cavity, ectoderm followed directly by mesoderm. |
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Definition
| Space between the ectoderm and mesoderm. |
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Definition
| Body cavity completely sorrounded by the mesoderm. |
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Definition
| Animals with a true Coelom. |
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Definition
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Definition
| Has coelom and complex organs (Snails, shellfish, octopuses, and squids). |
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Definition
| Has Segmentation (Segmented worms, earthworms). |
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| Has jointed appendages and exoskeletons (Spiders, insects, crustations, millipedes, centipedes). |
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Definition
| Blastospore becomes the anus. |
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| Enclosed system of tubes that fill with water and allow animals to move arms. |
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