Question

Write T for the True and F for the False statements. Correct the false stateme
1. All microorganisms are harmful and cause diseases in plants and animals. 2012
2. Pathogens enter the body of a healthy person through air and water only
3. When antibiotics are injected within a human body, the body produces substances
called vaccines,
4.
In nature, nitrogen is fixed during lightning or by nitrogen-fixing bacteria and blue
green algae.
5. When plants and animals die, sulphur in their bodies is decomposed and returned to
the air
6. Grazing by cattle causes a disease called fin rot.
7. Foulodour is the only symptom that shows that a food has become unfit for consumption
8. Boiling involves removal of water from food items,
9. Pasteurization involves heating a foodstuff to a high temperature and then cooling it
rapidly.
10. All diseases are communicable diseases, caused by pathogens.​

Answer 1

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