write 10 lines on the usefulness of microorganisms in our lives
Answers
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Uses of microorganisms:
(i) Microorganisms help in the preparation of curd, bread, cake etc.
(ii) They are used to produce alcohol at large scale.
(iii) Yeast is used to prepare vinegar.
(iv) Microorganisms are used to make wines.
(v) They act as cleaning agent and decompose the waste products into manure.
(vi) They destroy the plant and animal dead bodies by decomposing them.
(vii) They increase soil fertility by fixing nitrogen of atmosphere.
(viii) They are used in making medicines like antibiotics and vaccines.
(ix) They are used as preservatives for food items.
(x) They help in various metabolic activities in our body.
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Explanation:
Micro-organisms are too small to be seen through naked eyes.
Here are 10 lines on the usefulness of microorganisms in our lives1) Bacteria present in our intestine help in proper digestion
2) The bacterium Lactobacillus promotes the formation of curd.
3) Rhizobium present in the roots of leguminous plants fix nitrogen from air and supply nitrogen
compounds to these plants.
4) Microbes are used to reduce pollution. Some microorganisms decompose the organic waste and
dead plants and animals into simple substances and clean up the environment.
5) Micro-organisms are also used in winemaking, baking, pickling and other food making processes.
6) Microorganisms are used in the manufacturing of antibiotics. Antibiotics are chemicals produced by
micro-organisms to kill bacteria. Penicilin is an antibotic made from Penicilium.
7) Alcoholic fermentation by yeast is widely used in the preparation of wine and bread.
8) Many vaccines are prepared from micro-organisms. These vaccines are given to children to protect
them from disease.
9) Certain microbes are also used in the biological treatment of sewage and industrial effluents.
10) Yeast is used in making idlis, bhaturas, bread, pastries and cakes.