This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How are deer and wolves classified? A) As decomposers. B) As consumers. C) As carnivores. D) As producers. Show Answer Correct Answer: B) As consumers. 2. Heterotrophic organisms are those that produce their own food and energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. Humans Change Ecosystems to better fit their needs A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Which is the correct, balanced equation for CELLULAR RESPIRATION? A) C6H12O6 + 6O2 + 6H2O + sunlight $\rightarrow$ 6CO2 + 12H2O. B) C6H12O6 + 6O2 + 6H2O + ATP$\rightarrow$ 6CO2 + 12H2O. C) 6CO2 + 12H2O + sunlight $\rightarrow$ C6H12O6 + 6O2 + 6H2O. D) C6H12O6 + 6O2 + 6H2O $\rightarrow$ 6CO2 + 12H2O + ATP. Show Answer Correct Answer: D) C6H12O6 + 6O2 + 6H2O $\rightarrow$ 6CO2 + 12H2O + ATP. 5. What are the benefits of maintaining a balanced ecosystem? A) Maintaining a balanced ecosystem benefits the survival of species, promotes biodiversity, improves air and water quality, and provides essential ecosystem services. B) Worsens air and water quality. C) Reduces biodiversity. D) Causes extinction of species. Show Answer Correct Answer: A) Maintaining a balanced ecosystem benefits the survival of species, promotes biodiversity, improves air and water quality, and provides essential ecosystem services. 6. An ecosystem is a system consisting of: A) Biocenosis, the environment with its characteristics, and the interactions established between them. B) Living beings and the interactions established between them. C) Living beings and the environment they live in. D) None of the above. Show Answer Correct Answer: A) Biocenosis, the environment with its characteristics, and the interactions established between them. 7. Which of the following is a consequence of uncontrolled cell growth? A) Enhanced immune response. B) Cancer. C) Increased energy production. D) Improved cell function. Show Answer Correct Answer: B) Cancer. 8. What are the branching and interrelationships BETWEEN food chains in a biotic community an example of? A) A food web. B) A population. C) An ecosystem. D) A biome. Show Answer Correct Answer: A) A food web. 9. A snake that eats a mouse, which in turn eats grass, is an example of a: A) Primary consumer. B) Secondary consumer. C) Tertiary consumer. D) Decomposer. Show Answer Correct Answer: B) Secondary consumer. 10. Energy flows in a food chain as one organism consumes another for food. What happens to this energy as it moves up the food chain from one level to the next? A) It is stored in the organism as fat. B) It remains constant. C) It increases. D) It decreases. Show Answer Correct Answer: D) It decreases. 11. A species that is NOT native to a particular region and is harmful to the ecosystem is called A) Natural. B) Invasive. C) Non native. D) Extraordinary. Show Answer Correct Answer: B) Invasive. 12. A sweet, sugary liquid made inside flowers. Insects and hummingbirds eat it. A) Nectar. B) Coke Zero Sugar. C) Maple Syrup. D) Honey. Show Answer Correct Answer: A) Nectar. 13. What do you call all of the living things AND all of the non-living things together in the same environment? A) Population. B) Community. C) Ecosystem. D) Biome. Show Answer Correct Answer: C) Ecosystem. 14. If there are 1, 000 kilocalories of energy available at the producer level, how much energy will be available at the 3rd consumer level A) 1 kcal. B) 10 kcal. C) 100 kcal. D) None of the above. Show Answer Correct Answer: A) 1 kcal. 15. What two parts does a plant cell have that an animal cell does not? A) Cytoplasm and cell wall. B) Nucleus and cell membrane. C) Cell wall and chloroplasts. D) Cell membrane and cell wall. Show Answer Correct Answer: C) Cell wall and chloroplasts. 16. What is ecological tolerance? A) The amount of food a species can consume in a given environment. B) The ability of a species to control its environment. C) The process of adapting to a new ecosystem. D) The range of environmental conditions that a species can tolerate and survive in. Show Answer Correct Answer: D) The range of environmental conditions that a species can tolerate and survive in. 17. Which of the following is a 2nd level consumer?acorn$\rightarrow$ squirrel $\rightarrow$ owl $\rightarrow$ mushroom A) Squirrel. B) Owl. C) Mushroom. D) None of the above. Show Answer Correct Answer: B) Owl. 18. True or False:Herbivores impact the plant population A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Name one example of a biome. A) Rainforest. B) Desert. C) Tundra. D) Arctic Ocean. Show Answer Correct Answer: C) Tundra. 20. True or False:Predator Prey relationships do not affect populations A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. The first species to colonize an area that tend to be small, tough, and require few nutrients: A) Primary Succession. B) Secondary Succession. C) Climax Community. D) Pioneer Species. Show Answer Correct Answer: D) Pioneer Species. 22. What term describes the range of conditions that an organism can endure and survive in? A) Habitat. B) Niche. C) Microclimate. D) Tolerance. Show Answer Correct Answer: D) Tolerance. 23. Why is biodiversity important for the health of an ecosystem? A) Ecosystem services are not affected by biodiversity. B) Biodiversity has no impact on the productivity of an ecosystem. C) Biodiversity provides resilience, supports ecosystem services, and contributes to stability and productivity. D) Biodiversity leads to ecosystem imbalance and instability. Show Answer Correct Answer: C) Biodiversity provides resilience, supports ecosystem services, and contributes to stability and productivity. 24. How does a lack of vascular tissue affect mosses? A) Mosses cannot produce flowers. B) Mosses cannot sexually reproduce. C) Mosses cannot have true roots, stems, and leaves. D) Mosses cannot produce glucose by photosynthesis. Show Answer Correct Answer: C) Mosses cannot have true roots, stems, and leaves. 25. A very large ecosystem that is made up of many smaller ecosystem such as rainforest or grasslands A) Micro ecosytem. B) Messo ecosystem. C) Biome. D) None of the above. Show Answer Correct Answer: C) Biome. ← 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