Across
- 5. Internal framework or bones.
- 6. Living on the bottom of water bodies.
- 8. Bladder A gas-filled organ that helps fish float.
- 9. Animals that rely on the environment for temperature
- 11. No symmetry; uneven shape.
- 12. Animals without a backbone.
- 17. Eggs Eggs with a protective shell for land animals.
- 18. A way some organisms reproduce by growing new parts.
- 19. Symmetry Body parts arranged around a center.
Down
- 1. Vascular System A system using water for movement and feeding.
- 2. The free-swimming stage of jellyfish.
- 3. A stationary life stage of some animals, like jellyfish.
- 4. Organisms with both male and female parts.
- 7. Hard outer covering for protection.
- 10. Flexible tissue, like in noses and ears.
- 13. Animals with a backbone.
- 14. Animals that can regulate their body temperature.
- 15. Shedding of skin or outer layer.
- 16. Symmetry Mirror-image halves on either side.