This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 15 Our Environment – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 15 Our Environment Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The last organism in a food chain is A) Producer. B) Decomposersers. C) Parasites. D) None of the above. Show Answer Correct Answer: B) Decomposersers. 2. Which of these organisms are the most important decomposers in an ecosystem? A) Algae and fungi. B) Fungi and bacteria. C) Algae and bacteria. D) Bacteria and virus. Show Answer Correct Answer: B) Fungi and bacteria. 3. Flow of energy in a food chain is always A) Bidirectional. B) Unidirectional. C) Multidirectional. D) All of the above. Show Answer Correct Answer: B) Unidirectional. 4. A network of interconnected food chain is called A) Food Web. B) Flow of energy. C) Ecosystem. D) Biomagnification. Show Answer Correct Answer: A) Food Web. 5. What percentage of sunlight is absorbed by green plants during photosynthesis A) 10%. B) 0%. C) 1%. D) 100%. Show Answer Correct Answer: C) 1%. 6. If a grasshopper is eaten by a frog, then the energy transfer will be from A) Producer to decomposer. B) Producer to primary consumer. C) Primary consumer to secondary consumer. D) Secondary consumer to Primary consumer. Show Answer Correct Answer: C) Primary consumer to secondary consumer. 7. What is the study of the interactions among organisms and between organisms and their environments called? A) Biology. B) Ecology. C) Astronomy. D) Biosphere. Show Answer Correct Answer: B) Ecology. 8. Which pollutant is dangerous for Taj Mahal A) CO$_{2}$. B) SO$_{2}$. C) CO. D) All of these. Show Answer Correct Answer: B) SO$_{2}$. 9. Which is not a component of human environment A) Land. B) Religion. C) Community. D) All of these. Show Answer Correct Answer: A) Land. 10. What is the definition of Biotic factors? A) Dead things. B) Plants. C) Living things or organisms. D) Soil. Show Answer Correct Answer: C) Living things or organisms. 11. Which is not a natural Ecosystem? A) Desert. B) Aquarium. C) Forest. D) None of these. Show Answer Correct Answer: B) Aquarium. 12. Which of these does not belong to biotic component? A) Parasites. B) Fungi. C) Bacteria. D) Soil. Show Answer Correct Answer: D) Soil. 13. Which of the two in the following sets belong to the same trophic level? A) Grass; Grasshopper. B) Goat; Spider. C) Hawk ; Rat. D) Frog ; Lizard. Show Answer Correct Answer: D) Frog ; Lizard. 14. Flow of energy in an ecosystem is always A) Multidirectional. B) Bidirectional. C) No specific direction. D) Unidirectional. Show Answer Correct Answer: D) Unidirectional. 15. Which of the following is a biodegradable? A) Glass. B) Plants. C) Plastics. D) Polythene. Show Answer Correct Answer: B) Plants. 16. Natural environment can be divided into ..... types. A) Two. B) Three. C) Five. D) Four. Show Answer Correct Answer: B) Three. 17. In a given food chain the amount of energy at fourth trophic level is 5 KJ, what will be the energy at producer level? A) 5kg. B) 500kg. C) 50kg. D) 5000kg. Show Answer Correct Answer: D) 5000kg. 18. ASSERTION:Aquariums are known as man made ecosystems.REASON:Aquariums are created and maintained by humans. A) Both A & R are true. R is the correct explanation of A. B) Both A & R are true. R is the incorrect explanation of A. C) A is true but R is false. D) A is false but R is true. E) Both A & R are false. Show Answer Correct Answer: A) Both A & R are true. R is the correct explanation of A. 19. The community of organisms that live in a particular area along with the non-living surroundings as well ..... A) Population. B) Community. C) Ecosystem. D) None of the above. Show Answer Correct Answer: C) Ecosystem. 20. What is causing damage to the Ozone layer? A) Methane. B) Carbon dioxide. C) CFCs. D) All of the above. Show Answer Correct Answer: C) CFCs. 21. Environmental day is on ..... A) June 5. B) September 28. C) December 7. D) April 22. Show Answer Correct Answer: A) June 5. 22. Which statement shows interaction of an abiotic component with a biotic component in an ecosystem? A) A grasshopper feeding on a leaf. B) Rainwater running down into the lake. C) An earthworm making a burrow in the soil. D) A mouse fighting with another mouse for food. Show Answer Correct Answer: C) An earthworm making a burrow in the soil. 23. Which of the following is non-biodegradable? A) Cow dung. B) Plastic. C) Manures. D) Plant's Products. Show Answer Correct Answer: B) Plastic. 24. When these energy sources are used, they are lost forever. A) Renewable. B) Non-renewable. C) Sustainable. D) Green. Show Answer Correct Answer: B) Non-renewable. 25. (c) Would this phenomenon have occurred if the chemical that had entered the food chain was biodegradable? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. ← PreviousNext →Related QuizzesClass 10 Science Chapter 15 Our Environment Quiz 1Class 10 Science Chapter 15 Our Environment Quiz 2Class 10 Science Chapter 15 Our Environment Quiz 3Class 10 Science Chapter 15 Our Environment Quiz 4Class 10 Science Chapter 15 Our Environment Quiz 5Class 10 Science Chapter 15 Our Environment Quiz 6Class 10 Science Chapter 15 Our Environment Quiz 7Class 10 Science Chapter 15 Our Environment Quiz 9Class 10 Science Chapter 15 Our Environment Quiz 10Class 10 Science Chapter 15 Our Environment Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books