7. Write 10 lines on the usefulness of microorganisms in our lives.

Answers (1)

Microorganisms are useful for us in following ways- 

  • Microorganisms are used to increase the fertility of the soil by fixing the atmospheric nitrogen with the help of blue-green algae and Rhizobium.
  • Antibiotics which are obtained from microorganisms are used to control the diseases.
  • There are some bacteria which can turn nitrogen compounds found in the soil into nitrogen gas which is further released into the environment.
  • Bacterium Lactobacillus reproduces in milk and promotes the formation of curd.
  • Microorganisms especially yeast can be used for the industrial production of alcohol, wine and acetic acid (vinegar). 
  • Microbes are used to reduce pollution. example- bacteria and fungi break down the dead bodies and excreta to form inorganic compounds which are absorbed by plants
  • Yeast reproduces rapidly and produces carbon dioxide during respiration. Bubbles of the gas fill the dough and increase its volume.Thus they have a use in making of bread

 

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