MCQ Questions for Class 8 Science Chapter 2 Microorganisms Friend and Foe with Answers

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1. 

   Best Answer

   Examgyani Team Gandalf

   2022-10-19T14:25:48+05:30Added an answer on October 19, 2022 at 2:25 pm

   Answer:

   1.  Watering the crops is called:

         (a)   sowing

   (b)   manuring

   (c)   tilling

   (d)   irrigation

   1.  Spyrogyra is

         I.     An algae

         II.    A fungi

         III.   A protozoa

         IV.   A bacteria

   2.  Vaccine for small pox is discorvered by

         I.      Louis Pasteur

         II.    Alexander Fleming

         III.   Edward Jenner

         IV.   John Mendal

   3.  Amount of nitrogen in the atmosohere is

         I.      58%

         II.    68%

         III.   78%

         IV.   88%

   4.  Mushroom belongs to

         I.      Algae

         II.    Virus

         III.   Fungi

         IV.   None of these

   5.  Amoeba belongs to

         I.      Algae

         II.    Fungi

         III.   Protozoa

         IV.   Virus

   6.  Scientist who discovered fermentation is

         I.      Alexander Fleming

         II.    Louis Pasteur

         III.   John Mendal

         IV.   Edward Jenner

   7.  Rhizobium becteria

         I.      Help in digestion

         II.    Help in nitrogen fixation

         III.   Cause diseases

         IV.   All of the above

   8.  Malaria Is caused by

         I.      Protozoa

         II.    Virus

         III.   Algae

         IV.   Bacteria

   9.  Penicillium is a

         I.      Algae

         II.    Fungus

         III.   Bacteria

         IV.   Yeast

   10.  Microorganisms are

         I.      Unicellular

         II.    Multi-cellular

         III.   Both

         IV.   None of these

   Answers

         1)     II

         2)     III

         3)     III

         4)     III

         5)     III

         6)     II

         7)     II

         8)     I

         9)     II

         10)  II

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