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🧾 CBSE · Class 8

Class 8 Science: How Nature Works in Harmony Worksheet (with Answers)

A free, print-ready worksheet on How Nature Works in Harmony for CBSE Class 8 Science, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

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Sample worksheet

7 of 17 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

  1. 1. Green plants in an ecosystem are:
    • (a) consumers
    • (b) producers
    • (c) decomposers
    • (d) predators
  2. 2. The non-living parts of an ecosystem are called:
    • (a) biotic
    • (b) consumers
    • (c) abiotic
    • (d) producers
  3. 3. Organisms that break down dead matter are:
    • (a) producers
    • (b) herbivores
    • (c) carnivores
    • (d) decomposers
  4. 4. A sequence like grass → deer → tiger is a:
    • (a) food chain
    • (b) habitat
    • (c) population
    • (d) species
  5. 5. What is an ecosystem?
  6. 6. Name the three roles organisms play in an ecosystem.
  7. 7. Explain the roles of producers, consumers and decomposers with examples.
View answers
  1. 1. (b) producers — Plants make their own food, so they are producers.
  2. 2. (c) abiotic — Air, water and soil are abiotic components.
  3. 3. (d) decomposers — Decomposers recycle nutrients from dead matter.
  4. 4. (a) food chain — It shows energy passing as food — a food chain.
  5. 5. A community of living things interacting with their non-living surroundings.
  6. 6. Producers, consumers and decomposers.
  7. 7. Producers, such as green plants, make their own food using sunlight and form the base of the ecosystem. Consumers depend on others for food: herbivores like deer eat plants, carnivores like tigers eat animals, and omnivores like crows eat both. Decomposers, mainly fungi and microbes, break down dead plants and animals, releasing nutrients back into the soil. Together these roles keep matter and energy moving through the ecosystem.
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FAQ

Is this Class 8 Science worksheet on How Nature Works in Harmony free?
Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.
Does the How Nature Works in Harmony worksheet come with answers?
Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?
Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?
This worksheet is aligned to CBSE Class 8 Science, chapter “How Nature Works in Harmony”.