Across
- 1. Bottom dwellers
- 4. Type of symmetry based around a central point
- 5. Hard outer shell
- 8. The ability to bend at joints
- 9. Form of protection where internal organs are ejected from the body
- 10. Most successful animal phylum
- 11. Endoskeleton of echinoderms are made up of ___ carbonate
- 12. Pincers commonly found at the base of tube feet in sea stars
Down
- 2. Animals that lacks a backbone
- 3. A ___-vascular system is used instead of circulatory, respiratory and excretory systems in echinoderms
- 6. This type of muscle allow quick, strong, and rapid movement
- 7. Shedding of old exoskeleton