Across
- 3. — The body region of a crayfish divided into six segments.
- 5. — Appendages that create water currents and help with reproduction.
- 8. — The process of shedding an old exoskeleton and growing a new one.
- 9. — The hard protective shell covering a crayfish's cephalothorax.
- 12. — A hard outer covering that protects and supports the body.
- 14. — An animal with jointed appendages and a hard outer covering.
- 16. — An organ involved in the digestion of food.
- 17. — Organs used by most crustaceans to breathe.
- 19. — Jaw-like mouthparts used to crush and chew food.
Down
- 1. — The subphylum of arthropods that includes crabs, lobsters, and shrimp.
- 2. — Mouthparts that help hold and manipulate food.
- 4. — A system in which blood is not enclosed in vessels.
- 5. — Division of the body into repeating sections.
- 6. — The claws of a crayfish, used for catching prey and defense.
- 7. eyes — Eyes made of many individual lenses that detect light and movement.
- 10. — The body region formed by the head and thorax of a crayfish.
- 11. — The digestive organ that receives food from the digestive gland.
- 13. — The tube that carries food from the mouth to the stomach.
- 15. — The rear body part of a crayfish that helps form the tail fan.
- 18. — A substance that makes up the main protective layer of an arthropod's exoskeleton.