IMPORTANT TERMS IN UNIT 3 - 5

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Across
  1. 1. respond to water and gravitational pull
  2. 4. green substance found in plants
  3. 5. formed when light cannot pass through objects
  4. 7. respond to sunlight
  5. 9. breathing organs of fish
  6. 10. animals without backbones
  7. 12. occurs when light from an object is reflected
  8. 14. lays eggs, has moist skin
  9. 16. a gas plants need to make food
  10. 17. path of light from an object to mirror to an eye
  11. 18. does not allow light to pass through it
  12. 19. the process of plants making their own food
  13. 20. respond to touch
Down
  1. 2. main energy source for green plants
  2. 3. allows some light to pass through it
  3. 6. animals with backbones
  4. 8. breathing organs of insects
  5. 11. when light travels through two different mediums, the direction of light changes
  6. 13. give birth, has fine hair, breathe using lungs
  7. 15. allows all light to pass through it
  8. 17. lays eggs, has scales or hard shell