| A | B |
| Zoology | the study of animals |
| Protista | kingdom of single-celled organisms |
| Animalia | kingdom of multicellular animals |
| multicellular | having more than one cell |
| eukaroyotic | organisms whose cells contain a nucleus |
| heterotroph | organism that obtains energy from the foods it consumes |
| cyte | Latin root meaning cell |
| zoa or zoo | Latin root meaning animal |
| demo | Latin root meaning people |
| epi | Latin root meaning on or on top |
| coel | Latin root meaning cavity |
| oid | Latin root meaning like |
| ation | Latin root meaning to form |
| taxon | Latin root meaning unit |
| nomen | Latin root meaning name |
| clature | Latin root meaning system |
| pori | Latin root meaning pore |
| fera | Latin root meaning to have or to bear |
| cephala | Latin root meaning head |
| homologous | similar in origin |
| invertebrates | animals with no backbone |
| vertebrates | animals that have a backbone |
| carnivore | animal that eats meat only |
| herbivore | animal that eats plants only |
| omnivore | animal that eats meat and plants |
| detritivore | animal that feeds on dead plants and animals |
| symbosis | the relationship in which two species live closely together |
| mutualism | both species benefit from the relationship |
| commensalism | one member benefits from the relationship and the other is neither helped nor harmed |
| parasitism | one organism lives on another and harmes it |
| respiration | to take in oxygen and give off carbon dioxide |
| diffusion | to move from high concentration to low concentration |
| circulation | to move materials around within the body |
| excretion | to eliminate waste materials from the body |
| response | the reaction to events in the environment using |
| motile | able to move |
| reproduction | the ability to produce offspring |
| gametes | consist of eggs and sperms |
| nervous system | the collection of special connected cells that allow an animal to respond to its environment |
| receptors | nerve cells that respond to sound, light and other stimuli |