Biology Grade 9 Chp 1

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Across
  1. 2. …. material another term for reactant.
  2. 4. … cell is cell that helps form a stoma in a leaf, to allow gases in and out
  3. 6. hole in a leaf, formed between two guard cells
  4. 7. soluble carbohydrate which exists as small molecules
  5. 10. green substance that absorbs light, to get energy for photosynthesis.
  6. 11. substance made from elements
  7. 12. nutrients that living organisms need in small amounts for health, growth and repair. Also called mineral salts.
  8. 13. when a plant becomes floppy due to lack of water
  9. 15. …. solution where liquid turns from orange to blue-black when added to starch
  10. 16. green part of a cell that contains chlorophyll.
  11. 18. nutrient needed for energy
  12. 20. substance that changes in a chemical reaction to form products.
Down
  1. 1. substance made during a chemical reaction.
  2. 3. the spreading out of particles from where there are many (high concentration) to where there are fewer (lower concentration)
  3. 4. sugar made by digesting carbohydrates (in animals) and by photosynthesis (in plants).
  4. 5. …. respiration is respiration that requires oxygen to release energy from glucose
  5. 6. large insoluble carbohydrate made by plants to store energy
  6. 8. a series of chemical reactions in which carbon dioxide and water are converted to glucose and oxygen.
  7. 9. plant cell that is adapted to form hollow tubes to transport water
  8. 14. the loss of water vapor through the stomata on the surface of the leaves
  9. 17. to take in or soak up
  10. 18. …. reaction change in which new substances are produced.
  11. 19. …. cell is plant cell found in roots that is adapted for taking in water quickly