Write short note on - 'Microorganism: Friend or Foe".
Answers
Answer:
A micro-organism or microbe is an organism which is microscopic, which means so small that people cannot see them with naked eye. The study of microorganisms is called microbiology. Micro-organisms include bacteria, fungi, archaea, protists and viruses, and are among the earliest known life forms
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Explanation:
Microorganisms are friendly as well as harmful. Friendly Microorganisms: Microorganisms are used for various purposes by human beings as well as in nature. Some of the beneficial effects of microorganisms are as follows: i. Microorganisms are used in the production of alcohol, wine and acetic acid. ii. They are used in making curd, bread and cake. iii. They are used in the preparation of medicines called antibiotics. iv. They are used in agriculture to increase the fertility of soil by fixing atmospheric nitrogen gas. v.They clean up the environment by decomposing the organic matter of dead plants, dead animals and animal wastes into harmless and useful simple substances. Harmful Microorganisms: Microorganisms can be harmful in many ways. For example – some of the microorganisms cause diseases in human beings, other animals and plants. Such microorganisms which cause diseases are called pathogens.
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