2. Twenty Questions Subject:

3. Twenty Questions 12345 678910 1112131415 1617181920

4. 1. The mouth part used for biting and grinding food Mandible

5. 2. The organs in spiders that contain silk glands Spinnerets

6. 3. The process through which an arthropod sheds its entire exoskeleton and makes a larges one in its place. Molting

7. 4. Chemical signals used by insects for communication Pheromones

8. 5. A pair of appendages in Chelicerata that contain fangs that are used to stab or paralyze prey. Chelicerae

9. 6. The group (Sub phylum) that ticks belong to: Chelicerata

10. 7. The region in a crustacean where the head and the trunk region are combined into one long section. Cephalothorax

11. 8. Structures that spiders use for respiration. Booklungs

12. 9. An ant belong to the class… Insecta

13. 10. A fossilized arthropod… Trilobite

14. 11. The tough, outer skeleton of an arthropod. Exoskeleton

15. 12. Spiders use these to grab their prey Pedipalps

16. 13. Excretes nitrogenous wastes with these: Malpighian tubules

17. 14. Make up the exoskeleton Chitin

18. 15. Characteristics that arthropods share: Have an exoskeleton Body shows segmentation Has jointed appendages

19. 16. Crustacea is a sub phylum including animals like: Shrimp, Crab, Lobster, Krill, Barnacles

20. 17. The part of the exoskeleton of a crustacean that covers the cephalothorax Carapace

21. 18. An arthropod that has 5 pairs of legs belong the __________ group: Decapod

22. 19. Crayfish swim with these and use them during reproduction: Swimmerets

23. 20. Where air enters the body of an arthropod: Spiracles