Arthropods

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Across
  1. 2. Exoskeleton is made up of
  2. 3. Molting with four stages: egg, larva, pupa, and adult
  3. 4. Phylum Arthropoda, Class uses book lungs for respiration
  4. 5. An open body cavity with dorsal heart and no blood vessels
  5. 7. Extinct Class of Phylum Arthropoda
  6. 9. characterized by three legs on thorax
  7. 11. Phylum that must molt
Down
  1. 1. Subphylum with three body parts and two antenna
  2. 2. Subphylum with Malpighian, book lungs, and hollow fangs
  3. 3. Centralized nervous system
  4. 4. Mechanoreceptors and chemoreceptors are found on
  5. 6. Horseshoe crabs are classified as
  6. 8. Order of Arachnida with telson on last segment of abdomen
  7. 10. Two legs per body segment
  8. 12. Order of Arachnida with head fused into abdomen