World of Microbes English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

9th Standard

    Reg.No. :
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Science

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. One of the means of indirect transmission of a disease is

    (a)

    sneezing

    (b)

    coughing

    (c)

    vectors

    (d)

    droplet infection

  2. Mosquito borne viral diseases are

    (a)

    malaria and yellow fever

    (b)

    dengue and chikungunya

    (c)

    filariasis and typhus

    (d)

    kala azar and diptheria

  3. Which one of the following is a pair of viral disease?

    (a)

    Filariasis, AIDS

    (b)

    Common cold, AIDS

    (c)

    Dysentry, Common cold

    (d)

    Typhoid, Tuberculosis

  4. The primary organ infected during tuberculosis is

    (a)

    bone marrow

    (b)

    intestine

    (c)

    spleen

    (d)

    lungs

  5. The organ affected by jaundice is

    (a)

    liver

    (b)

    lungs

    (c)

    kidney

    (d)

    brain

  6. Poliomyelitis virus which causes infantile paralysis enters the body through

    (a)

    skin

    (b)

    mouth and nose

    (c)

    ears

    (d)

    eye

  7. Which substance is produced within an organism to prevent the spread of microorganism?

    (a)

    Antiseptics

    (b)

    Antibiotics

    (c)

    Antibodies

    (d)

    All the above

  8. Which of the following micro organism helps in fermentation?

    (a)

    Yeast

    (b)

    Mould

    (c)

    Mushroom

    (d)

    Rhizopus

  9. The most common carrier of communicable diseases is __________.

    (a)

    ant

    (b)

    dragonfly

    (c)

    lizard

    (d)

    housefly

  10. This bacteria gives special aroma to coffee beans and tea leaves.

    (a)

    Bacillus megaterium

    (b)

    Lactobacillus

    (c)

    Aspergillus niger

    (d)

    None

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