Question

short note on useful soil microorganisms

Answer 1

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Microorganism➫ An organism that can be seen only with microscope & that typically consists of only a single cell.

♦ It can only be viewed through a microscope.

♦ It widespread in nature & are beneficial to life but some can cause serious harm.

♦ It include Bacteria, Protozoans, Algae & Fungi.


➧ Types 0f Microorganism are:-
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[1] Bacteria:-

❱ A single-celled organisms that thrive in diverse environments.

[2] Fungi:-

❱ A single-celled or multicellular organism & can be true pathogens.

[3] Viruses:-

❱ A small infectious agent that replicates only inside the living cells of other organisms.

[4] Protozoa:-

❱ Any of a large group of one-celled organisms that live in water or as parasites.

[5] Algae:-

❱ A type of plant-like living things that can make food from sunlight by photosynthesis.

➧ Advantage 0f Microorganism are:-
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❱ They fix gases & breaking down dead plant & animal matter into simpler substances.

❱ They help in production of food materials such as bread, cheese & curd.

❱ They help us digest food & regulate the production of vitamins & nutrients.

❱ They fight against those harmful bacteria which can cause diseases.

❱ They help in preparation of vaccines.

❱ They help in Fermentation.

➧ Disadvantage 0f Microorganism are:-
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❱ They cause diseases & infection.

❱ They lowers the immune system of the body which makes path to various bacteria into the body.

❱ Some bacterial infections like Pneumonia can sometimes cause death.

❱ Bacterial infections can breakdown skin & organs.

❱ They can cause severe gastrointestinal infections as a consequence of the ingestion of contaminated food.

➧ To Prevent the Microorganism are:-
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❱ Get the appropriate vaccine.

❱ Wash your hands frequently.

❱ Stay home if you are sick (so you do not spread the illness to other people).

❱ Use a tissue or cough & sneeze into your arm, not your hand.

❱ Use single-use tissues.

➧ The conditions / Factors which Microorganism grows:-
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[1] Time:-

❱ A single bacterium can multiply to over two million in just seven hours.

[2] Warmth:-

❱ The danger zone temperatures at which bacteria grow best are between 5ºC and 63ºC.

[3] Food:-

❱ Any other living things, germs need food to grow.

[4] Water:-

❱ Bacteria need moisture to grow.

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Thanks...✊

Answer 2

Explanation:

a single cell organism is called microorganisms soil is a mixture of sand and vegetables