Microorganisms friends and foe Worksheet-11

Microorganisms friends and foe Worksheet-11

 

Answer the following Questions:

  1. Name two communicable diseases.

  2. Name two carriers of disease-causing microbes.

  3. Name the causative microorganism of tuberculosis and its mode of transmission.

  4. How are cholera and typhoid transmitted?

  5. Name the dangerous human and cattle disease caused by a bacterium.

  6. Which microorganism causes foot and mouth disease of cattle?

  7. Name one plant disease caused by bacteria and its mode of transmission.

  8. Name one plant disease transmitted by insects and caused by virus.

  9. Name one plant disease caused by fungi and its mode of transmission.

  10. What is meant by food poisoning?

  11. What are preservatives?

  12. How are pickles preserved?

  13. Name the chemicals used to preserve jams and squashes.

  14. How are meat and fish preserved?

  15. How does sugar help to preserve jams and jellies?