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Solutions 2. Microorganisms : Friend And Foe - Chapter Review | Class 8 Science - Toppers Study

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Solutions 2. Microorganisms : Friend And Foe - Chapter Review | Class 8 Science - Toppers Study

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Chapter 2 Science class 8

Chapter Review class 8 Science Chapter 2. Microorganisms : Friend And Foe

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Solutions 2. Microorganisms : Friend And Foe - Chapter Review | Class 8 Science - Toppers Study
Class 8 Ncert Solutions
Solution Chapter 2. Microorganisms : Friend And Foe Class 8
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Chapter 2. Microorganisms : Friend And Foe Chapter Review Class 8

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2. Microorganisms : Friend And Foe

| Chapter Review |

Solutions 2. Microorganisms : Friend And Foe - Chapter Review | Class 8 Science - Toppers Study

Chapter Review:

There are other living organisms around us which we cannot see with eyes alone. These are called microorganisms or microbes.
Microorganisms are classified into four major groups. These groups are bacteria, fungi, protozoa and some algae.
Viruses are quite different from other microorganisms. They reproduce only inside the host organism; bacterium, plant or animal cell.
Microorganisms are found in air, water and in the bodies of plants and animals.
They can live in all kinds of environment, ranging from ice cold climate to hot springs and deserts to marshy lands.
Some microorganisms are useful for commercial production of medicines and alcohol.
Some microorganisms decompose the organic waste and dead plants and animals into simple substances and clean up the environment.
There are some insects and animals which act as carriers of disease causing microbes. Like housefly.
Disease causing agents are called pathogens.
When a disease-carrying microbe enters our body, the body produces antibodies to fight the invader.
Several diseases, including cholera, tuberculosis, smallpox and hepatitis can be prevented by vaccination.
Process of conversion of sugar into alcohol is known as fermentation.
Medicines which kill or stop the growth of the disease-causing microorganisms. Such medicines are called antibiotics.
Microorganisms like amoeba can live alone, while fungi and bacteria may live in colonies.
Microorganisms are used to increase soil fertility by fixing nitrogen.
Lactobacillus bacteria are found in curd, which promotes the formation of curd.
Sugar is converted into alcohol by yeast.

Other Pages of this Chapter: 2. Microorganisms : Friend And Foe

1. Chapter 2. Microorganisms : Friend And Foe | Chapter Review

2. Chapter 2. Microorganisms : Friend And Foe | Text Book Exercise

3. Chapter 2. Microorganisms : Friend And Foe | Text Book Exercise

4. Chapter 2. Microorganisms : Friend And Foe | Additional Questions With Solutions

5. Chapter 2. Microorganisms : Friend And Foe | Additional Questions With Solutions

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