Across
- 2. an organ that connects the developing fetus
- 4. vertical
- 5. derived from an outpocketing of the digestive tube.
- 7. a non-vascular type of supporting connective tissue
- 8. eggs that are encased by extra-embryonic
- 10. body types
- 12. asexual
- 13. a highly evolved and specialized organ
- 17. male and female
- 19. is a hard covering that supports and protects the bodies of some types of animals.
- 20. a skeleton that is on the inside of a body, like humans, dogs, or some fish
Down
- 1. backbone
- 3. a system of vessels in echinoderms
- 6. cold blooded
- 9. the shedding or casting off of an outer layer or covering and the formation of its replacement
- 11. projecting growth
- 12. opposite body types
- 14. x equality
- 15. warm blooded animals
- 16. bottom of water
- 18. deuterostomal animals