This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 47 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A relationship between different species. A) Symbiosis. B) Mutualism. C) Parasitism. D) Commensalism. Show Answer Correct Answer: A) Symbiosis. 2. What amount of percentage does the energy decrease as it goes up the pyramid? A) 100%. B) 1000%. C) 10%. D) 1%. Show Answer Correct Answer: C) 10%. 3. Wetlands have high species diversity. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 4. Which of the following processes releases carbon dioxide into the atmosphere? A) Photosynthesis. B) Respiration. C) Transpiration. D) Condensation. Show Answer Correct Answer: B) Respiration. 5. Nitrogen is converted to ..... in the soil by certain microorganisms. A) Ammonia. B) Urea. C) Nitrates. D) Gas. Show Answer Correct Answer: C) Nitrates. 6. What is the primary learning intention of the video? A) To understand the music in ecosystems. B) To learn about the history of ecosystems. C) To investigate changes in past ecosystems to manage future ones. D) To memorize the names of different ecosystems. Show Answer Correct Answer: C) To investigate changes in past ecosystems to manage future ones. 7. Difference between primary and secondary succession? A) Primary has soil. B) Primary begins without soil. C) Secondary occurs only in oceans. D) Primary occurs only after fires. Show Answer Correct Answer: B) Primary begins without soil. 8. A large community of organisms in a certain area is A) A trophic level. B) An ecosystem. C) A family. D) Consumers. Show Answer Correct Answer: B) An ecosystem. 9. Which of the following organisms obtain energy from the sun to provide energy to other organisms in the food chain?Antara organisma berikut, yang manakah mendapat tenaga daripada matahari untuk membekalkan makanan kepada organisma yang lain dalam rantai makanan> A) Producerpengeluar. B) Herbivoreherbivor. C) Decomposerpengurai. D) Carnivorekarnivor. Show Answer Correct Answer: A) Producerpengeluar. 10. To change behaviors to help one to survive A) Adapted. B) Climate. C) Habitat. D) Ecosystem services. Show Answer Correct Answer: A) Adapted. 11. Which property distinguishes pioneer species from those that arrive later in ecological succession? A) Ability to grow very quickly. B) Ability to grow on hard, barren rock. C) Ability to grow in loose, wet soil. D) Defenses against herbivory. Show Answer Correct Answer: B) Ability to grow on hard, barren rock. 12. Temp, oxygen, and water are ..... factors. A) Abiotic. B) Biotic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Abiotic. 13. What does the plant produce in photosynthesis as well as sugar? A) Carbon dioxide. B) Nitrogen. C) Water. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 14. A group of living things that interact in an ecosystem is called a: A) Living. B) Community. C) Ecosystem. D) Population. Show Answer Correct Answer: B) Community. 15. What are the top predators in a food chain? A) Grasshoppers. B) Bears and orcas. C) Wolves. D) Snakes. Show Answer Correct Answer: B) Bears and orcas. 16. True or False:Temperature does NOT affect the animals that live in marine ecosystems. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 17. What has been a significant human impact on ecosystems? A) Increased biodiversity. B) Decrease in global temperatures. C) Reduction in land clearing. D) Introduction of diseases. Show Answer Correct Answer: D) Introduction of diseases. 18. What legislation regulates the mining sector in New South Wales? A) The Mining Act and the Clear Air Act. B) The Environmental Protection Act. C) The Land Reclamation Act. D) The Water Management Act. Show Answer Correct Answer: A) The Mining Act and the Clear Air Act. 19. Which of the following organisms are most at risk for the bio magnification of Mercury? A) Phytoplankton. B) Zooplankton that eat the phytoplankton. C) Minnows that eat the zooplankton. D) Large fish that eat the minnows. Show Answer Correct Answer: D) Large fish that eat the minnows. 20. An individual who eats only plants is called a(n) A) Herbivore. B) Omnivore. C) Carnivore. D) Decomposer. Show Answer Correct Answer: A) Herbivore. 21. What term is used to describe all the organisms of different species living in one habitat? A) Population. B) Community. C) Ecosystem. D) Habitat. Show Answer Correct Answer: B) Community. 22. Rabbits are members of a community in a meadow. The rabbits eat grasses, clover, as well as roots, seeds, and tree bark. What describes the organisms that share the same trophic level as the rabbits? A) Snakes, hawks, and other animals that eat rabbits. B) Community members that interact with rabbits. C) Meadow animals that are about the same size as a rabbit. D) Meadow animals that eat plants and plant products. Show Answer Correct Answer: D) Meadow animals that eat plants and plant products. 23. Which statement describes all primary producers? A) All harness the energy of sunlight through the process of photosynthesis. B) All take in energy to assemble energy-rich compounds. C) All are small, single-celled organisms, such as bacteria and algae. D) All take in food and break it apart to release energy. Show Answer Correct Answer: B) All take in energy to assemble energy-rich compounds. 24. Discuss the role of keystone species in maintaining ecosystem balance. A) Keystone species are not important for preserving biodiversity. B) Keystone species only benefit a few select species in the ecosystem. C) Keystone species help maintain ecosystem balance by regulating the population of other species and preserving biodiversity. D) Keystone species have no impact on ecosystem balance. Show Answer Correct Answer: C) Keystone species help maintain ecosystem balance by regulating the population of other species and preserving biodiversity. 25. An example of a prey is A) Producer. B) 1st level consumer. C) Top of the food chain. D) Decomposer. Show Answer Correct Answer: B) 1st level consumer. ← 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