Two distinct groups of animals: Invertebrates – animals without backbones Vertebrates – animals with backbones. Animals within each group share similar characteristics. Heterotroph – organism that cannot make its own food. Autotroph – an organism that can make its own food.

Multi-cellular Eukaryotic Can not make their own food. Digest their food. Can move from place to place.

The arrangement of tissues and organs within the body of an organism. Three types of symmetry.

Body parts arranged in a circle around a central point. Examples jelly fish, sea urchins sea anemone

A line can be drawn down the center of body to divide into two similar parts. Examples: grasshoppers, lobsters, humans

Bodies that cannot be divided into similar halves. (Irregular shaped) Example: Sponges