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Question:

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

Solution:

  1. Penicillium, a fungi is used to produce antibiotics like penicillin.
  2. Rhizobium helps in nitrogen fixation in soil and thus, increases the fertility of the soil.
  3. Yeast is widely used in bakery for making fluffy bread and cake.
  4. Blue green algae carry out nitrogen fixation.
  5. Lactobacillus is used in dairy industries for setting of curd and in cheese making.
  6. Many microbes carry out decomposition of dead remains of plants and animals.
  7. Spirulina, yeast are used as single cell proteins (supplementary food).
  8. Yeast is used on commercial basis for the production of alcohol via fermentation.
  9. Processing and ageing of cheese is carried out by microorganisms.
  10. Some microroganisms are used as a probiotic (live bacteria and yeasts that are good for digestive system and maintain good health of the host). They are called as 'good' or 'useful' bacteria.