What is an Animal? Eukaryotic (complex cells) Multicellular (made of many cells) Heterotroph (obtain food from outside) swallow and digest inside the body Motile (move from place to place) Reproduce sexually (joining of egg and sperm)

The Animal Kingdom 2 Major Groups INVERTEBRATE- An animal that does not have a backbone VERTEBRATE- An animal that has a backbone

9 Phyla of the Animal kingdom 1)Porifera6) Mollusca 2)Cnidaria 7) Arthropoda 3)Flatworms8) Echinodermata 4)Roundworms9) Chordata 5)Segmented worms

Porifera Means “having pores” Asymmetry Filter feeders Ex: sponges

Cnidaria Means “stinging cells” Radial symmetry Sac like body with tentacles Ex: hydras, jelly fish, coral, sea anemones

3 Phyla of Worms: Bilateral symmetry Organ systems One way digestive tracts Ex: Flatworms, roundworms, segmented worms

Mollusca: Means “soft bodied” Hard shell surrounding soft body parts Bilateral symmetry Examples:  Snail, clam, scallop Only a few do not have shells:  Octopus, squid, slug

Arthropoda: Means “jointed feet” Bilateral symmetry Exoskeleton Segmented body w/jointed legs Ex: beetle, milli & centipede, spider, lobster, crab

Echinodermata: Means “spiny-skin” Radial symmetry Star shaped Spiny Ex: Sea star, sand dollar, sea Urchin

Chordata: Vertebrates – backbones Bilateral symmetry Endoskeleton Ex: fish, amphibians, reptiles, birds, mammals