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a feature or behavior that can improve an
organism’s chance for survival |
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domain of single-celled organisms that lack a nucleus (domain – a group within a classification) |
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the smallest structural living unit that can function independently |
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to organize into groups based on similar characteristics (ie: tree of life) |
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having different body parts doing different jobs |
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| remains, impression, track, or other evidence of ancient organisms |
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| an animal without a backbone |
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| all or most body parts doing the same job |
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| composed of one cell, it is the simplest life-form |
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| balanced arrangement of parts |
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| any organsim that does not require oxygen fro growth |
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| one line that divides an organism into halves that are mirror images (examples: worm, fish, ladybug, butterfly, dog, etc.) |
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| organism with many lines of symmetry that all go through a central point (examples: sea star, jelly) |
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| organism with no pattern of symmetry (example: sea sponge) |
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| a feature that helps to distinguish an organism |
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