| A | B |
| Invertebrates | Animals without backbones. |
| Flatworms | The Simplest worms |
| Segmented Worms | They have bodies that are all divided into rings or segments. |
| Mollusks | Soft-bodies invertebrates, such as clams, scallops, oysters and snails. |
| Arthropods | Insects,spiders and crabs. They have an outer skeleton, legs that bend at joints, and a bodythat is divided into sections. |
| Vertebrates | Animals with backbones |
| Cartilage | A tough, flexible material that helps support and shape body parts. |
| Warm-blooded Vertebrates | Animals that always have the same body temperature. |
| Birds | Vertebrates that have feathers which protect a bird's body and help control it's body temperature. |
| Mammals | Warm-blooded animals with some hair or fur and produce milk to feed their young. |
| Marsupials | Animals that carry their young in a pouch. |
| Cold-blooded vertebrates | Their body temperature stays about the same as the temperature around them; ex. fish. |
| Amphibians | Lives in water and on land. |
| Reptiles | Cold-blooded animals that have dry,scaly skin. |
| Zoologists | Scientists who study animals. |
| Carnivores | Animals that eat mostly meat. |
| Herbivores | Animals that feed mainly on plants. |
| The number of Kingdoms of Classification | 5 |
| Kingdoms in Order: greatest to least | Animal,Plant, Fungus, Protist, Moneran |
| Classify | To group. |
| Phylum | Largest group within a kingdom. |
| Food Source, Structure, Movement, Number of cells | Categories scientists use to classify organisms. |
| Field Guide | A book that contains descriptions of organisms grouped in various ways. |
| Carolus Linnaeus | Developer of s system for naming organisms. |
| Kingdom, Phylum, Class, Order, Family, Genus, Species | The seven main groups in scientific classification which help keep all Earth's organisms in order. |