Across
- 3. extinct subphylum
- 5. one body segment (class Arachnida, order _____)
- 7. absorb nutrients from the host
- 8. (protein) makes a hard exoskeleton
- 10. under exoskeleton
- 15. 5-part radial symmetry
- 16. part of spiders' respiratory system
- 17. roundworm disease
Down
- 1. appendages
- 2. (class) has leg claws
- 4. three pairs of legs on the thorax
- 6. millipede diet
- 8. spiders, ticks, scorpions, horseshoe crab (subphylum)
- 9. crabs, shrimps, barnacles (subphylum)
- 11. insects, millipedes, centipedes (subphylum)
- 12. the fourth step in molting
- 13. must ____ an exoskeleton in order to make a new one
- 14. male spiders' performance style