Vertebrates & Invertebrates

Classification of Animals Vertebrates Invertebrates

Vertebrates Animals that are vertebrates are simply animals with a backbone. Vertebrates have an endoskeleton It offers support and protects the soft parts of the animal.

Vertebrates Ectotherms (cold-blooded) Vertebrates can either be ectotherms or endotherms. Ectotherms (cold-blooded) Body temperature changes to match their surroundings. Endotherms (warm-blooded) Regulate their body temperature so that it remains constant

Vertebrates Vertebrate animals fall into the chordate phylum. The chordate phylum is divided into classes. fish amphibians reptiles birds mammals

Vertebrates Vertebrates This chart shows the vertebrates organized into classes. ! Vertebrates Fish Amphibians Reptiles Birds Mammals

Invertebrates Invertebrates are animals without a backbone. 97% of all animals are invertebrates! They are divided into different groups or phyla (plural of phylums). Scientists look at something called symmetry to help classify invertebrates.

Invertebrates Radial symmetry: body parts are arranged around in a circle around a central point (sea star). Bilateral symmetry: have two sides that will match if you draw a line down the center of their body (lobster). Asymetric: these animals have no definite shape at all (sponges).

Invertebrates Invertebrates Cnidarian Sponges Mollusks Annelids Arthropods Mollusks Invertebrates Echinoderms Annelids Flatworms