| A | B |
|---|
| Chlorophyll | A green chemical in plant cells that allows plants to use the sun's energy to make food. |
| Organ System | A group of organs that work together to do a certain job. |
| Multicellular | Many-celled organism |
| Organ | A group of tissues working together to do a certain job. |
| Organism | Any living thing that can carry out its life on its own. |
| Cell | The smallest unit of living matter. |
| Tissue | A group of similar cells that work together at the same job. |
| Unicellular | A one celled organism. |
| Vascular | Plant tissue through which water and food move. |
| Nonvascular | Containing no plant tissue through which water and food move. |
| Invertebrate | An animal that does not have a backbone. |
| Kingdom | The largest group into which an organism can be classified. |
| Species | A group of similiar organisms in a genes that can reproduce more of their own kind. |
| Classification | The science of organizing categories for living things. |
| Vertebrate | An animal that has a backbone. |
