This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. All of the nonliving parts of an ecosystem are ..... A) Biography. B) Biotic. C) Abiotic. D) Biology. Show Answer Correct Answer: C) Abiotic. 2. Relationship between organisms in which one organism benefits at the expense of the other A) Mutualism. B) Parasitism. C) Commensalism. D) Symbolism. Show Answer Correct Answer: B) Parasitism. 3. ..... :the variety of life in the world, or in a particular habitat or ecosystem. A) Biodiversity. B) Carrying Capacity. C) Limiting Factor. D) None of the above. Show Answer Correct Answer: A) Biodiversity. 4. True or false:hurricanes, tornadoes, floods, and fires are examples of secondary succession A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. Matter that is not used is called A) Water. B) Waste. C) Recyled. D) Garbage. Show Answer Correct Answer: B) Waste. 6. In a temperate forest, the trees are ..... A) Many different colors almost Fall-like. B) All one main color. C) Very sticky and humid. D) None of the above. Show Answer Correct Answer: A) Many different colors almost Fall-like. 7. ..... get there energy from eating other organisms. A) Producers. B) Consumers. C) Carnivores. D) Herbivores. Show Answer Correct Answer: B) Consumers. 8. Intraspecific competition is A) Different species competing for similar resources. B) The same species competing for exactly the same resources. C) Different species competing for exactly the same resources. D) The same species competing for similar resources. Show Answer Correct Answer: B) The same species competing for exactly the same resources. 9. Which group contains only heterotrophs? A) Grass, coral, algae. B) Fungi, elephant, snail. C) Rose bush, tree, moss. D) Photosynthetic bacteria. Show Answer Correct Answer: B) Fungi, elephant, snail. 10. Which of the following is NOT a part of the biogeochemical cycle? A) Biosphere. B) Geosphere. C) Atmosphere. D) Hydrosphere. Show Answer Correct Answer: D) Hydrosphere. 11. True Or False:Biodiversity has man benefits A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Parasitism, mutualism, and commensalism are examples of ..... A) Food chains. B) Food webs. C) Symbiosis. D) Trophic levels. Show Answer Correct Answer: C) Symbiosis. 13. Bird & Tree:A bird builds a nest in a hole in the trunk of the tree. It is protected from the rain and predators. The tree is not harmed or helped by the bird. A) Mutualism. B) Commensalism. C) Parasitism. D) None of the above. Show Answer Correct Answer: B) Commensalism. 14. Why are decomposers necessary in ecosystems? A) They recycle essential nutrients back down to producers. B) They enrich soil with nitrogen. C) They help keep ecosystems clean. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. What is island geography? A) The study of the physical and human characteristics of mountains. B) The study of the physical and human characteristics of islands. C) The study of the physical and human characteristics of forests. D) The study of the physical and human characteristics of deserts. Show Answer Correct Answer: B) The study of the physical and human characteristics of islands. 16. Which of the following describes biodiversity A) The way that different animals migrate. B) The number of different species supported by an ecosystem. C) How animals interact with each other. D) None of the above. Show Answer Correct Answer: B) The number of different species supported by an ecosystem. 17. Succession that begins on newly formed rock or other areas that have no remnants of an older community is called A) Secondary Succession. B) Primary Succession. C) Primo Succession. D) No Succession. Show Answer Correct Answer: B) Primary Succession. 18. What is a key factor driving species towards extinction? A) Human-induced selection pressures. B) Meteor impacts. C) Natural disasters. D) Alien invasions. Show Answer Correct Answer: A) Human-induced selection pressures. 19. A change that disrupts the natural balance of an ecosystem A) Ecosystem services. B) Ecosystem disruption. C) Invasive species. D) None of the above. Show Answer Correct Answer: B) Ecosystem disruption. 20. Mushrooms are ..... A) Scavengers. B) Autotrophs. C) Herbivores. D) Decomposers. Show Answer Correct Answer: D) Decomposers. 21. Fill in the blank:Less energy is available to form new ..... as energy is lost at each trophic level. A) Energy. B) Biomass. C) Organisms. D) Levels. Show Answer Correct Answer: B) Biomass. 22. A community is the populations of all organisms from ..... species living in the ..... habitat whilst interacting with each other A) Different same. B) Same same. C) Different different. D) Same different. Show Answer Correct Answer: A) Different same. 23. Invasive species A) A non-native species that spreads quickly and harms ecosystems. B) A native species that is beneficial to its environment. C) A species that is extinct in its natural habitat. D) A species that is commonly found in multiple ecosystems. Show Answer Correct Answer: A) A non-native species that spreads quickly and harms ecosystems. 24. What type of environment are sclerophyll plants adapted to? A) Tropical climates with nutrient rich soils. B) Wetlands and estuaries. C) Harsh, dry climates and nutrient-deficient soils. D) Mangrove swamps. Show Answer Correct Answer: C) Harsh, dry climates and nutrient-deficient soils. 25. An animal that hunts other animals for food is a ..... A) Herbivore. B) Predator. C) Prey. D) Omnivore. Show Answer Correct Answer: B) Predator. ← 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