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Unit 5 Introduction
Classification Characteristic Vocabulary
| Term | Definition |
|---|---|
| prokaryote | A unicellular organism that lacks a nucleus and membrane bound organelles |
| eukaryote | A cell that contains a nucleus and membrane bound organelles |
| vertebrate | an animal with a backbone |
| invertebrate | an animal that does not have a backbone |
| sexual reproduction | 2 parents; genetically different offspring |
| asexual reproduction | 1 parent; genetically identical offspring |
| bilateral symmetry | Body plan in which only a single, imaginary line can divide the body into two equal halves. |
| radial symmetry | body plan in which body parts repeat around the center of the body |
| asymmetry | lack of symmetry |
| heterotroph | An organism that cannot make its own food. |
| autotroph | An organism that makes its own food |
| sessile | Describes an organism that remains attached to a surface for its entire life and does not move |