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Tamil Nadu State Board · Class 8 · ScienceChapter 2Samacheer Kalvi

Tamil Nadu State Board Worksheet for Class 8 Science — Microorganisms: Friend and Foe

Learn about the beneficial and harmful effects of microorganisms in our lives.

Free AI-powered worksheet for Samacheer Kalvi Science, Class 8, Chapter 2.

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Indian context — what this NCERT chapter centres on

Class 8 Science Chapter 2 (Microorganisms: Friend and Foe) is taught through these India-specific anchors in the NCERT textbook. The worksheet above is pre-loaded with these so the output reflects the way the chapter is actually taught in Indian classrooms.

  • Use of Lactobacillus in making curd, a staple in Indian households
  • Role of microorganisms in the preparation of traditional foods like idli and dosa
  • Impact of diseases like cholera and tuberculosis in India
  • Case studies on the use of antibiotics in Indian healthcare

Key terms — Class 8 Science (Microorganisms: Friend and Foe)

MICROORGANISMSBACTERIAVIRUSESFERMENTATIONANTIBIOTICSPATHOGENS

Teaching tips for Microorganisms: Friend and Foe

  • 1Conduct a local field trip to a dairy farm to observe the fermentation process
  • 2Invite a local health expert to discuss the impact of diseases caused by pathogens in the community
  • 3Organize a project where students can culture microorganisms from different food items commonly found in Indian kitchens
  • 4Use examples of local flora and fauna to explain the role of microorganisms in ecosystems

Board exam relevance

Questions may include multiple-choice questions (MCQs) on types of microorganisms, short answer questions about their roles, and long answer questions discussing the impact of specific microorganisms on health and food.

What to expect in this worksheet

A balanced 10-question Science worksheet on Microorganisms: Friend and Foe for Class 8 — mixed difficulty, NCERT-aligned, ready to print or share on WhatsApp.

Easy (40%)

Recall-and-recognise questions that anchor the chapter's key terms.

Standard (40%)

Apply the concept to a new but familiar context.

Challenge (20%)

Higher-order thinking questions in the style of CBSE board exams.

Frequently asked questions

What does this Class 8 Science worksheet on Microorganisms: Friend and Foe cover?+

It covers the core ideas of NCERT Class 8 Science Chapter 2 (Microorganisms: Friend and Foe) — mixed-difficulty questions from recall to higher-order thinking.

Is the worksheet printable?+

Yes — use the Copy / PDF download once you generate. The output is plain text that pastes cleanly into Word, Pages or Google Docs.

Can I get an answer key?+

Add "Include answer key" in the optional fields before generating. The tool will produce questions and a separate answers block.

Is it free?+

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