MCQ Science Curiosity Chapter 12 Class 8 CBSE Board

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How Nature Works in Harmony

1. What are organisms that eat both plants and animals called?

Question 1 of 20

2. In a grassland ecosystem, what role does grass play in a food chain?

Question 2 of 20

3. What is a food chain?

Question 3 of 20

4. In the food chain Grass → Grasshopper → Frog → Snake → Eagle, what is the frog’s role?

Question 4 of 20

5. What shape is formed when organisms in a food chain are arranged by their numbers?

Question 5 of 20

6. What is the position of an organism in a food chain called?

Question 6 of 20

7. Which organisms occupy the first trophic level in a food chain?

Question 7 of 20

8. What is a food web?

Question 8 of 20

9. What role do fungi and bacteria play in an ecosystem?

Question 9 of 20

10. What is the process called when microorganisms break down dead matter into simpler substances?

Question 10 of 20

11. How do migratory birds contribute to ecosystems?

Question 11 of 20

12. What happens to a pond ecosystem if many plants die due to pollution?

Question 12 of 20

13. What was a consequence of harvesting Indian bullfrogs in the 1980s?

Question 13 of 20

14. How do mangroves in the Sundarbans benefit the ecosystem?

Question 14 of 20

15. Why was the Sundarbans declared a UNESCO World Heritage Site?

Question 15 of 20

16. What is a major threat to the Sundarbans ecosystem?

Question 16 of 20

17. What is the purpose of protected areas like Jim Corbett National Park?

Question 17 of 20

18. What distinguishes human-made ecosystems like farms?

Question 18 of 20

19. What was the Green Revolution in India?

Question 19 of 20

20. Why are synthetic fertilizers considered unsustainable?

Question 20 of 20


 

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