Across
- 4. - Animals with a backbone
- 7. - Internal support structure of vertebrates
- 11. - Asexual reproduction where a new organism grows off the parent
- 13. - Organ that nourishes developing embryos in mammals
- 14. - Animals whose body temperature depends on environment
- 17. Symmetry - Body plan with two equal halves
- 18. - Process of shedding an outer layer to grow
- 19. - A stage in jellyfish life that swims freely
- 20. - Lack of any definite shape or symmetry
Down
- 1. - Organism that has both male and female reproductive organs
- 2. - Flexible tissue found in sharks instead of bone
- 3. - Attached, tube-like body form of cnidarians
- 5. - Animals that keep a constant body temperature
- 6. Eggs - Eggs that can survive on land without drying out
- 8. Bladder - Organ that helps fish control buoyancy
- 9. Vascular System - System used by echinoderms for movement and feeding
- 10. - Living on the ocean floor
- 12. Symmetry - Body plan where parts are arranged around a center
- 15. - Animals without a backbone
- 16. - Hard outer covering that protects an animal
- 18. Glands - Glands that produce milk for offspring