Reactions of Life

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Across
  1. 3. A gas needed by plants and made by animals.
  2. 4. A green chemical that can trap sunlight.
  3. 5. Energy trapped by chlorophyll.
  4. 7. Energy produced by cellular respiration.
  5. 8. A sugar made by plants and eaten by animals.
  6. 10. Where oxygen enters the body of animals.
  7. 12. A substance absorbed by roots.
  8. 14. Holes in leaves where carbon dioxide enters.
  9. 15. A chemical reaction that occurs in plants.
Down
  1. 1. A reaction that absorbs energy from the surroundings.
  2. 2. A chemical reaction that occurs in all life.
  3. 3. A reaction that needs heat energy, a fuel and oxygen.
  4. 6. Produced by plants.
  5. 9. The organelle where photosynthesis takes place.
  6. 11. The organelle where cellular respiration happens.
  7. 13. A reaction that releases heat into the surroundings.