Across
- 1. Vascular System A water filled system used by sea stars for movement
- 7. A jellyfish shaped body form that swims freely
- 8. Relies on the environment to regulate body temperature
- 9. To shed an old outer covering
- 12. Living on or near the ocean floor
- 13. Bladder An organ that helps fish control their depth
- 15. A tube-shaped animal attached to a surface
- 16. A skeleton inside the body
- 17. An animal with a backbone
- 19. An organism with male and female reproductive organs
- 20. An organ that supplies a developing baby with nutrients and oxygen
Down
- 2. Having no regular body shape
- 3. Able to keep a steady body temperature using internal heat
- 4. Reproduction where a new organism grows from the parent
- 5. An animal without a backbone
- 6. Flexible tissue found in joints and some skeletons
- 8. A hard outer covering that protects the body
- 10. Eggs Eggs that protect the developing embryo
- 11. Symmetry A body that can be divided into two equal halves
- 14. Glands Organs that produce milk for babies
- 18. Symmetry Body parts arranged around a central point