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

Get complete NCERT Solutions for 8 Science 2. Microorganisms : Friend And Foe with detailed explanations. Easy-to-understand answers to help students study effectively and score better.

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

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

Get complete NCERT Solutions for 8 Science 2. Microorganisms : Friend And Foe with detailed explanations. Easy-to-understand answers to help students study effectively and score better.

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

Preparing for exams becomes easier with Chapter Review. Whether you are studying for board exams or mid-term exams, 8 Science Chapter 2. Microorganisms : Friend And Foe solutions provide quick revising points, well-structured answers, and additional practice material to help you score better.

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2. Microorganisms : Friend And Foe

Chapter Review


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. 
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📘 Why Chapter Review are Important?

Chapter Review are created by experts to give step-by-step explanations. Around 60–70% of exam questions are based on NCERT concepts. Our 8 Science Chapter 2. Microorganisms : Friend And Foe solutions help you understand the core concepts and practice effectively.

✍️ Quick Revising Points as Notes in Page-1

Revision is the key to exam success. Our notes for 8 Science highlight important formulas, key definitions, and exam-ready points from Chapter 2. Microorganisms : Friend And Foe. These quick revision notes make last-minute preparation easy.

📚 NCERT Exercise Solutions

Every NCERT chapter ends with exercises, and solving them is crucial. Our Chapter Review include complete solutions for 8 Science Chapter 2. Microorganisms : Friend And Foe exercises. With step-by-step answers, you gain clarity and confidence to attempt similar exam questions.

📝 Additional Important Questions & Answers

To boost your preparation, we also provide additional important questions with answers. These are prepared from previous year board papers, sample papers, and important concepts of Chapter 2. Microorganisms : Friend And Foe. Practicing these ensures you are well-prepared for both board and mid-term exams.

🎯 Useful for Board & Mid-Term Exams

Our Chapter Review are useful for both board exams and mid-term exams. For 8 Science, we provide notes, exercises, and important Q&A so that you can revise smartly and write perfect answers in exams.

🌟 Final Words

In short, Chapter Review for 8 Science Chapter 2. Microorganisms : Friend And Foe are a complete study package. With quick revising points, NCERT exercises, and additional important questions, you can prepare effectively for exams. Make these solutions your study companion and excel in your academic journey.

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