Crayfish Puzzle

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Across
  1. 2. 5 pairs of walking legs (crabs, lobsters)
  2. 3. 6 pairs of appendages (horeshoe crab)
  3. 5. hard outer covering, protects cephalothorax
  4. 7. moves water in gill chamber and helps move food to mouth
  5. 8. senses touch and taste; in front of mouth
  6. 11. tough polysaccharide that makes up an arthropod skeleton
  7. 13. smaller section that contains gills
  8. 14. process of the arthropod shedding it’s old shell
  9. 15. krill are
  10. 17. legs modified for swimming
  11. 18. structures to help crayfish see
  12. 19. decapods, krill, copepods
Down
  1. 1. crushes food
  2. 4. hard, protective skeleton made of protein and chitin
  3. 5. largest section that contains largest appendages
  4. 6. largest group of small crustaceans
  5. 9. pinchers that are used for capturing prey and for defense
  6. 10. senses touch and taste and helps crayfish maintain balance
  7. 11. modified for purpose of feeding (pincher)
  8. 12. glass shrimp breaks down algae and gracious of marsh ecosystem
  9. 14. holds food for easy feeding
  10. 16. long spike used for steering and defense