Micro Organisms Book Back Questions

8th Standard EM

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Science

Time : 00:45:00 Hrs
Total Marks : 30
    3 x 1 = 3
  1. Micro organisms are measured in ______.

    (a)

    cm

    (b)

    mm

    (c)

    micron

    (d)

    meter

  2. _______ shows both living and nonliving characteristics.

    (a)

    Protozoa

    (b)

    virus

    (c)

    bacteria

    (d)

    Fungi

  3. ______ is a prokaryotic micro organisms.

    (a)

    Virus

    (b)

    algae

    (c)

    fungi

    (d)

    bacteria

  4. 3 x 1 = 3
  5. __________ Vaccine is used to cure foot and mouth disease

    ()

    FMD Vaccine

  6. Causative organism for rabies is ___________

    ()

    Rhabdo virus

  7. African sleeping sickness is spread by the bite of the__________

    ()

    tsetse fly

  8. 4 x 1 = 4
  9. Female anopheles mosquito is a carrier of dengue virus.

    (a) True
    (b) False
  10. Chicken pox is a communicable disease.

    (a) True
    (b) False
  11. Citrus canker is transmitted by insects.

    (a) True
    (b) False
  12. Yeast is used in the large scale production of alcohol.

    (a) True
    (b) False
  13. 3 x 2 = 6
  14. Write the name of any nitrogen fixing bacteria. 

  15. Name the bacteria used in the production of vinegar.

  16. Write the names of any three protozoans.

  17. 3 x 3 = 9
  18. Write the four types of bacteria, based on their shape.

  19. What are pathogens?

  20. Why micro organisms are essential for agriculture?

  21. 1 x 5 = 5
  22. Write a short note on Probiotics.

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