Unit 4 CWP 1

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Across
  1. 5. inner layer of cells in gastrula (digestive system)
  2. 8. animals such as a mantis or crab have a hard OUTER shell called the...
  3. 9. outer layer of cells in gastrula (skin & nervous system)
  4. 10. animals such as a cow or wolf (with a spine)
  5. 11. head end
  6. 12. a fertilized egg cell
  7. 14. animals such as a jellyfish or starfish (without a spine)
  8. 15. a fluid filled ball of cells
Down
  1. 1. middle layer of cells in gastrula (muscular/circulatory/respiratory
  2. 2. balance among body structures of organisms
  3. 3. animals such as a cat or chipmunk have an internal structure that protects muscles and internal organs called the...
  4. 4. tail end
  5. 6. underside (belly)
  6. 7. backside (spine)
  7. 13. 2 layer sac with an opening at one end