This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the term used to describe the process by which microorganisms break down organic matter and release energy? A) Primary production. B) Photosynthesis. C) Respiration. D) Decomposition. Show Answer Correct Answer: D) Decomposition. 2. Which of the following describes a carnivore? A) An organism that eats meat. B) An organism that eats meat and plants. C) An organisms that only eats plants. D) None of the above. Show Answer Correct Answer: A) An organism that eats meat. 3. How do ecosystems obtain energy in environments that have no light? A) Through chemosynthetic organisms. B) Without light the organisms will need to move or they may go extinct. C) Through photosynthetic organisms. D) All ecosystems have some light. Show Answer Correct Answer: A) Through chemosynthetic organisms. 4. What are consumers that eat only animals A) Herbivores. B) Carnivores. C) Omnivores. D) None of the above. Show Answer Correct Answer: B) Carnivores. 5. What is required for the seeds of Banksia to be released? A) Freezing temperatures. B) Water immersion. C) Fire. D) Animal digestion. Show Answer Correct Answer: C) Fire. 6. A(n) ..... is a group of organisms that are have similar characteristics and can mate with each other to produce offspring that can also mate and reproduce. A) Organism. B) Species. C) Population. D) Community. Show Answer Correct Answer: B) Species. 7. Why are mushrooms important to the food chain? A) They recycle nutrients into the ecosystem. B) They produce food energy for other living things. C) They recycle oxygen into the atmosphere. D) They consume excess herbivores in the ecosystem. Show Answer Correct Answer: A) They recycle nutrients into the ecosystem. 8. Which organism is a heterotroph? A) Rose bush. B) Coral (via algae). C) Elephant. D) Photosynthetic bacteria. Show Answer Correct Answer: C) Elephant. 9. If more rabbits are in grassland ecosystem A) More rabbits will be seen. B) Tough competition for food among rabbits will be seen. C) No chage in ecosystem. D) Growth of grass will not be affected. Show Answer Correct Answer: B) Tough competition for food among rabbits will be seen. 10. Network of interconnected food chains A) Ecosystem. B) Food web. C) Trophic levels. D) Biological community. Show Answer Correct Answer: B) Food web. 11. Factors that affect ecosystem success such as wind speed and temperature are known as: A) Environmental. B) Abiotic. C) Biomic. D) Biotic. Show Answer Correct Answer: B) Abiotic. 12. What causes trophic cascades? A) Increasing the number of producers. B) Pollution. C) The removal of a keystone species. D) Introducing a new species to an ecosystem. Show Answer Correct Answer: C) The removal of a keystone species. 13. A group of gray wolves in Yellowstone Park is a ..... A) Population. B) Community. C) All the above. D) None of the above. Show Answer Correct Answer: A) Population. 14. What term describes how individual organisms interact over things such as habitat, food and mates? A) Conglomeration. B) Compatability. C) Competition. D) Construction. Show Answer Correct Answer: C) Competition. 15. The following are all characteristics of life EXCEPT: A) Made of cell(s). B) Eat food. C) Respond stimuli. D) Reproduce. Show Answer Correct Answer: B) Eat food. 16. What breaks down biotic wastes and dead organisms and returns the raw materials to the ecosystem A) A decomposer. B) A producer. C) A consumer. D) None of the above. Show Answer Correct Answer: A) A decomposer. 17. What is a key difference between autotrophs and heterotrophs? A) Autotrophs require sunlight to survive, while heterotrophs do not. B) Autotrophs produce oxygen, while heterotrophs consume it. C) Autotrophs consume organic molecules, while heterotrophs produce them. D) Autotrophs can form their own food through photosynthesis, while heterotrophs cannot. Show Answer Correct Answer: D) Autotrophs can form their own food through photosynthesis, while heterotrophs cannot. 18. What percentage of the Biology EOC in North Carolina is focused on ecosystems? A) 10-15%. B) 18-22%. C) 25-30%. D) 33-38%. Show Answer Correct Answer: B) 18-22%. 19. Which of the following is NOT a type of heterotroph? A) Saprotroph. B) Detritovore. C) Autotroph. D) Consumer. Show Answer Correct Answer: C) Autotroph. 20. Cycles among the hydrosphere, atmosphere, and geosphere-sometimes outside the biosphere and Sometimes in it. A) Water cycle. B) Carbon cycle. C) Phosphorus cycle. D) None of the above. Show Answer Correct Answer: A) Water cycle. 21. Which group of plants absorb water like a sponge? A) Vascular. B) Nonvascular. C) All the above. D) None of the above. Show Answer Correct Answer: B) Nonvascular. 22. What is the difference between a food chain and a food web? A) A food chain has more levels than a food web. B) A food chain includes decomposers, while a food web does not. C) A food web includes more organisms than a food chain. D) A food web only includes plants and animals, while a food chain includes all living things. Show Answer Correct Answer: C) A food web includes more organisms than a food chain. 23. What factor is NOT mentioned as a reason for ecosystem changes? A) Solar flares. B) Volcanic eruptions. C) Changes in methanogens. D) Meteorite impacts. Show Answer Correct Answer: A) Solar flares. 24. Describe the role of producers in a food chain. A) Producers consume energy from other organisms in the food chain. B) Producers have no role in providing energy for other organisms in the food chain. C) Producers are only found at the end of the food chain. D) Producers provide energy for other organisms in the food chain. Show Answer Correct Answer: D) Producers provide energy for other organisms in the food chain. 25. What will happen if a human cell is stored in a saline solution (salty)? A) The cell will lose water and causes the cell to shrink (osmosis). B) The cell will lose water and causes the cell to shrink (diffusion). C) The water will penetrate into the cell and causes the cell to be fatter (osmosis). D) The water will penetrate into the cell and causes the cell to be fatter (diffusion). Show Answer Correct Answer: B) The cell will lose water and causes the cell to shrink (diffusion). ← 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