9 Phyla of the Animal Kingdom

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

Animal Phyla 34 total phyla in the kingdom 34 total phyla in the kingdom Classifying criteria: Classifying criteria: Body symmetry Body symmetry Level of organization Level of organization

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

Levels of Organization Cellular: Cellular: Simplest animals are made of independent cells Simplest animals are made of independent cells Ex: Sponges Ex: Sponges

Levels of Organization Tissue: Tissue: Cells work together to form specialized tissues like muscle tissue Cells work together to form specialized tissues like muscle tissue Ex: Jellyfish Ex: Jellyfish

Levels of Organization Organs: Organs: Tissues work together to form organs; that do a specific job Tissues work together to form organs; that do a specific job Ex: Turtles have lungs. Ex: Turtles have lungs.

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

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

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

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

Phylum Mollusca Soft body, occasional hard shell Soft body, occasional hard shell Organized on the organ level Organized on the organ level Ex: Clams Ex: Clams

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

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

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

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