This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which process do plants use to turn sunlight into food energy? A) Photosynthesis. B) Cellular respiration. C) Transpiration. D) Evaporation. Show Answer Correct Answer: A) Photosynthesis. 2. A baby song bird hatches from its egg with both parent songbirds watching. Which characteristic of life does this represent? A) All living things reproduce. B) All living things maintain homeostasis. C) All living things use energy. D) All living things grow. Show Answer Correct Answer: A) All living things reproduce. 3. Everything is connected in an ecosystem from what it ..... A) Lives with. B) Talks to. C) Eats. D) Cooks. Show Answer Correct Answer: C) Eats. 4. Which of the following ecosystems receives full sunlight 24 hours a day? A) Swamps. B) Marshes. C) Oceans. D) None of the above. Show Answer Correct Answer: B) Marshes. 5. True of False:The temperature of the ocean water decreases as the depth of the water increases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. Which of the organisms below would be a producer? A) Algae. B) Mouse. C) Worm. D) None of the above. Show Answer Correct Answer: A) Algae. 7. What is a potential problem associated with underground mining? A) Noise pollution. B) Air pollution. C) Mine subsidence. D) Water contamination. Show Answer Correct Answer: C) Mine subsidence. 8. What term describes a single species within a habitat? A) Population. B) Community. C) Biome. D) Ecosystem. Show Answer Correct Answer: A) Population. 9. The dodder (Cuscuta europaea) is a species of plants that uses the stems of other plants as its carbon source. This plant would be considered a(n): A) Producer. B) Autotroph. C) Heterotroph. D) Decomposer. Show Answer Correct Answer: C) Heterotroph. 10. A prairie dog, a hawk, and a badger all are members of the same ..... A) Niche. B) Community. C) Species. D) Population. Show Answer Correct Answer: B) Community. 11. What is the importance of conservation in an ecosystem? A) Maintain balance and protect species diversity. B) Promote overpopulation and imbalance. C) Reduce biodiversity and species. D) Increase pollution and waste. Show Answer Correct Answer: A) Maintain balance and protect species diversity. 12. What makes an estuary different from other ecosystems? A) Life in an estuary is influenced by the rise and fall of the tides. B) Contains both seawater and freshwater. C) Organisms that live here have to adapt to the brackish water. D) All of the above. Show Answer Correct Answer: D) All of the above. 13. Define organisms and species. A) Plants and a group of organisms capable of interbreeding. B) Living things and a group of organisms capable of interbreeding. C) Inanimate objects and a group of organisms with similar characteristics. D) Non-living things and a group of organisms incapable of interbreeding. Show Answer Correct Answer: B) Living things and a group of organisms capable of interbreeding. 14. Which of these describes a mutualistic relationship? A) When one organism is harmed, but the other is benefitted. B) When one organism is unaffected, and the other is harmed. C) When one organism benefits, and the other is unaffected. D) When both organisms involved benefit. Show Answer Correct Answer: D) When both organisms involved benefit. 15. Contoh bentuk hubungan predatorisme adalah ..... A) Ular dengan tikus. B) Ayam dengan kelinci. C) Singa dengan harimau. D) Kambing dengan sapi. Show Answer Correct Answer: A) Ular dengan tikus. 16. Which reduces biodiversity? A) Protecting habitats. B) Habitat destruction, hunting, toxins. C) Increasing resources. D) Maintaining ecosystems. Show Answer Correct Answer: B) Habitat destruction, hunting, toxins. 17. Name This Relationship:Humans and Lice A) Predation. B) Competition. C) Parasitism. D) Commensalism. Show Answer Correct Answer: C) Parasitism. 18. A series of somewhat predictable events that occur in a community over time A) Ecological Parasitism. B) Ecological Succession. C) Ecological Community. D) Ecological imprint. Show Answer Correct Answer: B) Ecological Succession. 19. How much energy is transferred between trophic levels? A) 25%. B) 20%. C) 10%. D) 90%. Show Answer Correct Answer: C) 10%. 20. Organisms that can make their own food do so by the process of: A) Decomposition. B) Respiration. C) Photosynthesis. D) Scavenging. Show Answer Correct Answer: C) Photosynthesis. 21. There are 2 types of nutrition. The 2 types are ..... A) Autotrophic and homotrophic. B) Autotrophic and heterotrophic. C) Chemotrophic and sapotrophic. D) Heterotrophic and sapotrophic. Show Answer Correct Answer: B) Autotrophic and heterotrophic. 22. What happens to the carrying capacity if food or resources increase? A) The carrying capacity decreases. B) The carrying capacity remains the same. C) The carrying capacity increases. D) The carrying capacity fluctuates. Show Answer Correct Answer: C) The carrying capacity increases. 23. A species that plays a vital role in maintaining structure, stability, and diversity in an ecosystem. A) Nice Species. B) Major Species. C) Keystone Species. D) Impact species. Show Answer Correct Answer: C) Keystone Species. 24. What is an example of a carnivore that feeds on the bodies of dead organisms A) A deer. B) A bear. C) A vulture. D) None of the above. Show Answer Correct Answer: C) A vulture. 25. In terrestial ecosystem X, Y and Desert ecosystems are three types of ecosystems. Here X and Y are A) Forest and Grassland. B) Grassland and Lake. C) Fresh Water and Marine water. D) Forest and Marine water. Show Answer Correct Answer: A) Forest and Grassland. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 14 Ecosystem Quiz 1Class 12 Biology Chapter 14 Ecosystem Quiz 2Class 12 Biology Chapter 14 Ecosystem Quiz 3Class 12 Biology Chapter 14 Ecosystem Quiz 4Class 12 Biology Chapter 14 Ecosystem Quiz 5Class 12 Biology Chapter 14 Ecosystem Quiz 6Class 12 Biology Chapter 14 Ecosystem Quiz 7Class 12 Biology Chapter 14 Ecosystem Quiz 8Class 12 Biology Chapter 14 Ecosystem Quiz 9Class 12 Biology Chapter 14 Ecosystem Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books