Q24. What causes food poisoning?


Q25. How do we preserve pickles?


Q26. What are preservatives?


Q27. Why pasteurized milk can be consumed without boiling?


Q28. Name some unicellular and multicellular organisms.


Q29. How can we prevent the spread of communicable diseases?


Q30. How are viruses different from other microorganisms?


Q31. How do microorganisms clean the environment?


Q32. How are jams and squashes preserved?


Q33. What are the major groups of microorganisms?


Q34. What are microorganisms?


Q35. What diseases are prevented through vaccination?


Q36. Why do we keep food in refrigerator?


Q37. Why dry fruits and even vegetables are sold in sealed air tight packets?


Q38. Why is it important to vaccinate small children?


Q39. Who discovered the bacterium which causes anthrax disease?


Q40. How are cholera and typhoid transmitted?


Q41. Write any two common cattle diseases and its cause.


Last modified: Sunday, 23 June 2019, 9:57 AM