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8 Cards in this Set
- Front
- Back
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Animals
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Eukaryotic, multicellular, heterotrophs whose cells lack cell walls.
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Invertebrates
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Animals without backbones.
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Vertebres
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Animals with backbones.
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Asymmetrical
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When an organism's body has no symmetry.
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Symmetrical
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When one half of the organism matches the other half across a dividing plane.
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Radial Symmetry
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When an organism's body parts repeat around the center axis of the body.
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Bilateral Symmetry
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When animal can only be divided by one plane down the middle into two equal halves.
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Cephalization
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The concentration of sense organs and nerve cells are at the front end of the body.
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