Biological processes grade 7

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Across
  1. 3. oral secretions occurs here
  2. 6. An organ that does not belong to the digestive system
  3. 7. part of the respiratory system
  4. 9. these are formed by the union of organs
Down
  1. 1. A human system
  2. 2. the respiratory system and digestive system are common structures
  3. 3. food is pushed into the stomach
  4. 4. the structural unit of life
  5. 5. cells come together to form these
  6. 8. transports food in a plant