Animal Phyla

3. asymmetrical invertebrates with pores, and 1 body cavity opening
5. bilaterally symmetrical invertebrates that have an exoskeleton, jointed appendages and multiple organ systems
7. radially symmetrical invertebrates with an internal skeleton made from calcium carbonate.
8. bilaterally symmetrical invertebrates that are segmented and have multiple organ systems
9. animals without a backbone
10. invertebrates that have an external or internal mantle and multiple organ systems
12. bilaterally symmetrical vertebrates that have a notochord

1. long stiff rod extending along the body which will eventually be the back bone in most chordates
2. bilaterally symmetrical invertebrates that usually are transparent. Has a complete digestive tract.
4. bilaterally symmetrical flat bodies. Many are parasitic and can regenerate body parts.
6. radially symmetrical invertebrates with jelly-like bodies and primitive nervous system
10. part of certain animals that secretes a hard shell
11. organisms that can move as embryos but attach themselves to an object when an adult