chap2

12345678910
Across
  1. 2. Short form of polio vaccine
  2. 4. Substance used to produce immunity in living body
  3. 6. Healthy bacteria
  4. 7. Dry fruits and vegetables are preserved by this method
  5. 10. Air-borne disease caused by bacteria
Down
  1. 1. Micro-organisms produce __________ in the food items they grow
  2. 3. Disease – causing microbe
  3. 5. This is a substance present in the blood that helps to provide immunity
  4. 8. Spirogyra is an example of
  5. 9. Tobacco mosaic plant disease caused by