9 Phyla of the Animal Kingdom

Common Animal Phyla Characteristics Multicellular (many cells) Eukaryotic (cells contain nucleus) Heterotrophic (must eat) Lack cell walls Move 34 Total Animal Phyla

Types of body symmetry Asymmetry No symmetry Radial symmetry Circular shape Bilateral symmetry Identical right & left halves

Levels of Organization Cellular: Simplest animals are made of independent cells Ex: Sponges Tissue: Cells work together to form specialized tissues like muscle tissue Ex: Jellyfish Organs: Tissues work together to form organs; that do a specific job Ex: Turtles have lungs.

Phylum Porifera Found only in water Saclike bodies with many pores for feeding Simplest phylum Asymmetrical Organized into Cells EX: Sponges

Phylum Cnidaria Have stinging tentacles Radially symmetrical Organized into tissues Ex: Sea anemones

Phylum Platyhelminthes Mostly parasitic Bilaterally symmetrical Complex tissues: nerves and brain Ex: Flatworms &Tapeworms

Phylum Nematoda Bilateral Symmetrical Organized into Tissues Ex: Round worms & Hook worms & Pinworms

Phylum Mollusca Soft body, occasional hard shell Simple organ systems Ex: Clams

Phylum Annelida Segmented body (divided sections) worms Ex: Earthworms

Phylum Arthropoda Have jointed appendages Have an exoskeleton & molt Biggest phlum Ex: ALL insects

Phylum Echinodermata Spiny skin Radially symmetrical Well developed organs Can regenerate Ex: Starfish

Phylum Chordata Most advanced animals Internal skeleton and spinal cord Bilaterally symmetrical Example Fish (bony and cartilage) Amphibians Reptiles Mammals Birds All reproduce sexually