| A | B |
|---|
| cell | the smallest unit of living matter |
| chlorophyll | a green chemical in plant cells that allows plants to make food |
| classification | the science of organizing categories for living things |
| invertebrate | an animal that does not have a backbone |
| kingdom | the largest group into which an organism can be classified |
| multicellular | a many-celled organism |
| nonvascular | containing no plant tissue through which water and food move |
| organ | a group of tissues working together to do a certain job |
| organ system | a group of organs that work together to do a certain job |
| organism | any living thing that can carry out its life on its own |
| species | a group of similar organisms in a genus that can reproduce |
| tissue | a group of similar cells that work together at the same job |
| unicellular | a one-celled organism |
| vascular | plants containing tissue through which water and food move |
| vertebrate | an animal that has a backbone |
