Animal Crossword Puzzle

2. A system of water filled canals that helps echinoderms move and feed.
3. An animal that does not have a backbone.
4. A tube shaped animal form with its mouth and tentacles facing upward.
5. A type of reproduction where a new organism grows from the parent.
7. An animal whose body temperature depends mainly on its surroundings.
8. An animal that has both male and female reproductive organs.
13. Eggs that contain protective membranes that help an embryo develop on land.
15. An organ that provides oxygen and nutrients to a developing baby and removes waste during pregnancy.
17. An animal that has a backbone.
18. When an animal’s body parts are arranged around a central point.
19. A hard outer covering that supports and protects an animal’s body.
20. Living on or near the bottom of a body of water.

1. Glands that produce milk to feed young mammals.
5. When an animal’s body can be divided into two matching halves.
6. Bladder An organ that helps many fish control their position in the water.
9. An internal skeleton that supports and protects an animal’s body.
10. Able to produce body heat internally to maintain body temperature.
11. A flexible strong tissue found in places like sharks, skeletons, noses, and ears.
12. To shed an old outer covering so an animal can grow.
14. When an animal’s body cannot be divided into equal halves.
16. A jellyfish shaped animal with its mouth and tentacles facing downward.