PU M 2026 Ecosystem Free Quiz 1

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PU M 2026 Ecosystem Free Quiz 1

PU M Quiz

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Navigator 10 Q

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General 10 MCQs

1. What is an ecosystem?

A. Community of living organisms and their non-living environment B. Only living community C. Only non-living environment D. Population

2. What are the non-living components of an ecosystem called?

A. Biotic (living) B. Both C. Abiotic (non-living) D. Neither

3. What are producers and consumers in an ecosystem?

A. Producers only B. Consumers only C. Neither D. Producers and consumers

4. What is the difference between habitat and niche?

A. Habitat (place), niche (role) B. Habitat (role), niche (place) C. Both are the same D. Unrelated

5. What is a food chain?

A. Linear sequence of energy transfer B. Complex network of feeding relationships C. Ecological pyramid D. Trophic level

6. What is the correct order of trophic levels in a food chain?

A. Consumers, producers, decomposers B. Producers, primary consumers, secondary consumers, tertiary consumers C. Decomposers, producers, consumers D. Primary consumers, producers, secondary consumers

7. What percentage of energy is transferred from one trophic level to the next?

A. 1% B. 50% C. 10% D. 100%

8. What is the ultimate source of energy for most ecosystems?

A. The sun B. Geothermal energy C. Chemical energy D. Nuclear energy

9. What is a food web?

A. Network of interconnected food chains B. Linear food chain C. Ecological pyramid D. Trophic level

10. Why is a food web more accurate than a food chain?

A. Less accurate than a food chain B. More accurate than a food chain C. Same as a food chain D. Unrelated

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