Across
- 4. structure such as legs and antennae
- 7. animal with endoskeleton and a backbone
- 13. Fertilization when the sperm and egg combine inside the animals body
- 14. middle body region of the insect
- 16. used for biting and chewing by insects
- 17. a disease from eating raw meat
- 18. animals without backbones
- 19. small pinchers that aid in catching food
- 20. animals belonging to the phylum chordata
- 21. opening to the water vascular system
Down
- 1. hard or tough outer coverings for support
- 2. piece in which legs and wings are attached on a insect
- 3. produce both eggs and sperm in one animal's body
- 5. internal skeletons
- 6. a group of nerve cell bodies that coordinates incoming and outgoing nerve singles
- 8. possess of shedding an exoskeleton
- 9. a knob-shaped structure with hooks and suckers
- 10. the muscluler sac
- 11. individual sections behind the scolex
- 12. system of branching tubes
- 15. a possess in which a body part regrows
- 19. tubelike muscular organ