Across
- 3. Bladder Gas-filled organ that helps fish control buoyancy
- 9. Animal without a backbone
- 10. Symmetry Body plan with left and right halves that mirror each other
- 11. Body plan with no symmetry
- 15. Free-swimming, umbrella-shaped body form of cnidarians
- 20. Organism that regulates body temperature internally
- 21. Internal support structure of an organism
Down
- 1. Flexible connective tissue found in some skeletons
- 2. Eggs Eggs with a protective membrane for development on land
- 4. Animal with a backbone
- 5. Vascular System Network used by echinoderms for movement and feeding
- 6. Organism with both male and female reproductive organs
- 7. Organism that relies on external sources for body heat
- 8. Shedding of an exoskeleton to allow growth
- 12. Glands Structures that produce milk in mammals
- 13. Organ that nourishes developing offspring in the womb
- 14. Asexual reproduction where a new organism grows from the parent
- 16. Hard outer covering that supports and protects an organism
- 17. Living on or in the bottom of a body of water
- 18. Symmetry Body plan arranged around a central axis
- 19. Sessile, cylindrical body form of cnidarians