Animal Crossword

4. a system used for locomotion, feeding, and gas exchange
6. new organism or clone grows on the body and eventually detaches
7. A gas filled organ that helps fish maintain buoyancy in the water
11. Anything related to or occurring at the bottom of a body of water
14. shedding feathers, hair, skin, or an old shell to replace it with new growth
15. An internal skeleton
17. eggs with a protective shell that allow for development outside of water
18. Animals that don’t don’t develop or retain a vertebral column
20. organ that connects the fetus to the uterine wall
21. A lack of balanced proportions

1. Animals with a vertebral column, and a cranium, or skull
2. organs that produce and secrete milk
3. free-swimming, umbrella-shaped body form of cnidarians
5. organism where both sides of the body are mirror images of the other
8. organism whose body temperature is influenced by its environment, cold-blooded
9. parts of the body are arranged around the center
10. Possessing both female and male reproductive organs
12. An external skeleton
13. sessile, cylindrical, hollow body form of cnidarians
16. organisms who generate their own heat or warm-blooded animals
19. tough, flexible connective tissue