1. Kingdom Animalia Characteristics
Heterotrophs
Eukaryotic
Multicellular
No cell wall, no chloroplasts
Motile
Sense Organs

2. 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)

3. Phylum Porifera (sponges)
Asymmetrical
Pores—filter feeders
Not motile (sessile)
Provide habitat for other animals
Eaten by starfish and some fish
Most primitive animal

4. 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

5. 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!

6. 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

7. 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

8. 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

9. 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

10. Phylum Echinodermata (spiny-skinned)
i.e. sea stars = starfish,
sea urchins
Water vascular system
Tube feet
Important predators

11. Phylum Chordata (includes the vertebrates)
i.e. fish, sharks, amphibians, reptiles, birds, mammals
Notochord, nerve cord, gill slits, tail