Kingdom Animalia Phylum Exam 1

Phylum Portifera

-"sponges"

-usually asymmetrical

-Multi-cellular aquatic filter feeders

-incurrent and excurrent pores

Phylum Cnidaria

-sac like body plan; large body cavity

-Radial symmetry

-tentacles with stringing cells

-may create calcium carbonate exoskeleton (corals)

-examples (hydra, anemones, jellyfish, coral)

Phylum Rotifera

-"wheel bearing"

-pseudocoelom present (triploblastic)

-bilateral symmetry

-diagnostic trait = corona

-live in most moist habitats (water

Phylum Nematoda

-"roundworms"

-worm like

-bilateral symmetry

-non segmented

-fluid filled body cavity (tube like)

-ex heat worms, pin worms, vinegar eels

Subkingdom Protozoa

-collection of several phyla of single celled eukaryotes

-move by pseudopods, cilia, flagella

-ex: amoeba, flagellates, ciliates

Phylum Echinodermata

-radial symmetry

-spiny skin

-ex: sand dollars, sea urchins, sea stars, sea cucumbers

Phylum Chordata

-included vertebrates (and two other clades) with:

-post-anal tail

-dorsal hollow nerve cord

-notochord

-bilateral symmetry

-ex: tunicates, fishes, amphibians, reptiles and mammals

Phylum Annelida

-"segmented worms"

-elongate body plan, with internal/external segmentation

-most have bilateral symmetry

-often have setae (small bristles)

-ex polychaetes (marine worms), earthworms, leeches

Phylum Mollusca

-soft bodied animals

-aquatic or terrestrial

-bilateral symmetry

-"mantle" that secretes a shell in most

-muscular "foot"

-ex chitons, abalone, snails, clams, octopi

Phylum Arthopoda

-exoskeleton present (made of chitin)

-jointed appendages

-bilateral symmetry

-ex insects, spiders, crayfish, horseshoe crabs

Phylum Platyhelminthes

-"flat worms"

-dorso-ventrally flattened

-bilateral symmetry

-worm-like

-solid, cellular body

-ex: planaria, flukes, tapeworms