AP Biology-Animal Kingdom

Phylums & Classes

Phylum: Porifera

Sponges; Lack true tissues, suspension feeders, non-moving, asymmetry

Phylum: Cnidaria

Corals, jellies, hydras; radial symmetry, gastrovascular cavity, poly p or medusa

Phylum: Platyhelminthes

Flat worms; bilateral symmetry, CNS, acoelomateso

Phylum: Annelida (ringed)

Earthworms, leeches; segmented body, circular system

Phylum: Mollusca

Snails, clams, squid, octopuses; soft body, some have hard shell

Phylum: Arthopoda (joint feet)

Insects, arachnids; segmented exoskeleton, jointed appendages

Phylum: Nematoda (thread)

Roundworms; parasites, tough cuticle

Phylum: Echinodermata

Sand dollars, sea stars, sea urchins; bilateral symmetry, radial symmetry, tube feet

Class: Chordates

notochord (vertebral column/spinal chord)

Class: Osestechytes

Salmon, tuna, lungfish; gills, fins, swimbladder

Class: Chondrichthyes

Sharks, Rays, snates; cartilage skeleton, acute senses, internal fertilization

Class: Amphibia

Salamanders, frogs, caecillions; lungs, legs, 3-cambeted heart

Class: Reptilia

Lizards, snakes; scales, ectothermic

Class: Aves

Hawks, bluebirds, emus; endotherms, heel bone. urinary bladder, hollow bones

Class: Mammalia

Humans, mice, kangaroos; mammal glands, hair/fur, middle ear