Across
- 4. Used by spiders to inject venom into prey
- 8. Subphylum that contains lobsters
- 10. Arthropod subphylum that is now fully extinct
- 12. Process arthropods go through when they grow
- 13. Used by spiders for respiration
- 15. How many body segments do insects have
Down
- 1. Open body cavity with a heart and no blood vessels
- 2. Are usually herbivores
- 3. Antenna that branch into two
- 5. Anterior portion of a spider
- 6. A scorpions stinger
- 7. Used for excretion in crustaceans and considered a delicacy in lobsters
- 9. What exoskeletons of all arthropods are made of
- 11. Hard exterior covering that supports and covers arthropods
- 14. What kind of circulatory system do arthropods have