SCIENCE CROSSWORD

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Across
  1. 2. They have two dark
  2. 4. that detect light but cannot form images.
  3. 5. Are invertebrates with a hard exoskeleton (carapace), a segmented body that is bilaterally symmetrical, more than four pairs of jointed appendages ("legs") and an open circulatory system.
  4. 6. Flowering plants.
  5. 9. Means "hundred feet".
  6. 11. They are ectothermic vertebrates.
  7. 12. Known to live on both land and in water.
  8. 13. Means "thousand feet".
  9. 15. Spiny-skinned Animals.
  10. 18. Pore-bearing Animals.
  11. 20. Segmented Worms.
Down
  1. 1. Soft-bodied Animals.
  2. 3. Roundworms.
  3. 7. They are egg-laying mammals.
  4. 8. Joint-legged Animals.
  5. 10. Have eight legs, and unlike insects, they don't have antennae.
  6. 14. Provides framework for
  7. 16. Are plants that have only one cotyledon.
  8. 17. Are an informal group consisting of three divisions of non-vascular land plants.
  9. 18. and protects the body.
  10. 19. Stay in the liver of their host.