Across
- 4. Provides nutrients to a developing baby.
- 5. Skeleton inside the body.
- 8. Fluid system used for movement/ feeding (starfish).
- 10. Eggs Eggs that can survive on land
- 11. An animal that does not have a spine.
- 15. Animal with a spine.
- 17. Organ that helps fish float
- 18. Body can be spilt into left and right halves.
- 21. Body temperature depends on the environment.
Down
- 1. Hard outer covering for protection/support.
- 2. Body parts arranged around a central point.
- 3. Maintain constant body temperature internally.
- 6. Jellyfish-like, free- swimming form.
- 7. Shedding an exoskeleton to grow.
- 9. Produce milk for young
- 12. Soft, flexible tissue (like in sharks).
- 13. Has both male and female reproductive parts.
- 14. Tube-shaped, attached form (like coral)
- 16. No balanced or equal sides.
- 19. New organisms grow off the parent.
- 20. Living on the ocean floor.