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Micro Organisms Model Question Paper

8th Standard EM

    Reg.No. :
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Science

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. _________is a ball-shaped bacteria.

    (a)

    Bacilli

    (b)

    Spinilla

    (c)

    Cocci

    (d)

    Vibrio

  2. __________is an example for Lophotrichous

    (a)

    vibrio

    (b)

    Pseudomonas

    (c)

    Rhodospirillum

    (d)

    Corny bacterium

  3. Yeast reproduces by __________

    (a)

    Fragmentation

    (b)

    Budding

    (c)

    Sporulation

    (d)

    Sexual method

  4. Plasmodium belongs to _________ type of protozoan.

    (a)

    Ciliates

    (b)

    Flagellate

    (c)

    Pseudopods

    (d)

    sporozoans

  5. __________ is an acid - loving bacteria

    (a)

    Lactobacillus acidophilus

    (b)

    Pseudomonas

    (c)

    Xanthomonas

    (d)

    Vibrio cholera

  6. 5 x 2 = 10
  7. What are the five categories of microorganisms?

  8. Give any 2 living characters of virus.

  9. How can you classify bacteria based on their respiration?

  10. What are the types of Pigments found in algae?

  11. Mention any 2 plant diseases caused by microbes.

  12. 5 x 3 = 15
  13. What are the non -living characters of virus.

  14. Mention the four types of Protozoans with an example.

  15. Define fermentation?

  16. Mention the causative agent of foot Mouth disease and list out the symptoms.

  17. What do you know about pasteurization?

  18. 4 x 5 = 20
  19. Explain the structure of yeast.

  20. Describe the role of microbes in daily life

  21. Write a note on techniques followed in food preservation.

  22. Describe the cell structure of Amoeba.

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