Kingdom AnimaliaCharacteristics

• Heterotrophs

• Eukaryotic

• Multicellular

• No cell wall, no chloroplasts

• Motile

• Sense Organs

9 phyla we will mention

• Porifera—sponges• Cnidaria—jellyfish, sea anemones, coral• Platyhelminthes—flatworms• Nematoda—roundworms• Annelida—earthworms• Mollusca—shelled animals• Arthropoda—insects, spiders• Echinodermata—spiny-skinned• Chordata—vertebrates (and others)

Phylum Porifera(sponges)

• Asymmetrical• Pores—filter feeders• Not motile (sessile)• Provide habitat for

other animals• Eaten by starfish and

some fish• Most primitive animal

Phylum Cnidaria(jellyfish, sea anemones, coral)

• Digestive cavity called a coelenteron

• Radial symmetry• Predators-feed on

crustaceans• Corals provide important

habitat for fish• Coral used for decoration

and threatened by pollution

• All have stinging cells

Phylum Platyhelminthes(planarians, tapeworms, flukes)

• Bilateral symmetry• Cephalization- head and

brain• Acoelomate- no body

cavity• Incomplete digestive

system (one opening)• Some are parasites in

digestive tract• In early 1900’s models

ate them to be thin—YUK!

Phylum Nematoda(roundworms)

• Also called nematodes• Complete digestive

system-separate mouth and anus (2 openings)

• Pseudocoelomate• Decomposers, predators

(bacteria, inverts)• Eaten by insects, mice• Beneficial to garden by

eating insects

Phylum Annelida(segmented worms)

• i.e. earthworms, leeches• True coelom• Sensitive to vibrations on

ground-rain• Prey for robins, shrews,

jays, snakes• Leeches have cornified

knobs to break skin, anticoagulant and anesthetic

Phylum Mollusca(shelled…sometimes)

• i.e. snails, slugs, clams, mussels, scallops, oysters, octopus and squid

• Variety in form• Giant squid = sea

serpent• Introduction of garden

snails

Phylum Arthropoda(jointed legged animals)

• i.e. insects, spiders and scorpions, shellfish (crustaceans), centipedes (1 pr legs per segment), millipedes (2 pr)

• Exoskeleton• Metamorphosis• Pheromones• Molting

Phylum Echinodermata(spiny-skinned)

• i.e. sea stars = starfish,

sea urchins• Water vascular

system• Tube feet• Important predators

Phylum Chordata(includes the vertebrates)

• i.e. fish, sharks, amphibians, reptiles, birds, mammals

• Notochord, nerve cord, gill slits, tail