This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. As you move upward, from level to level, in an energy pyramid, energy ..... A) Increases. B) Decreases. C) Stays the same. D) Increases exponentially. Show Answer Correct Answer: B) Decreases. 2. What are carnivores and provide an example? A) Giraffes. B) Kangaroos. C) Elephants. D) Lions. Show Answer Correct Answer: D) Lions. 3. Click Here to Access the ReadingGo to Reading 6According to Reading 6, which of the following best describes the food supply in the Serengeti? A) The serengeti is wet all year and food is easy to find. B) The serengeti is dry all year and food is hard to find. C) The serengeti has wet and dry seasons, so the amount and quality of food varies. D) The serengeti has a wet and dry season but the plants have evolved to remain fully productive all year. Show Answer Correct Answer: C) The serengeti has wet and dry seasons, so the amount and quality of food varies. 4. Heterotrophs use the energy stored in sugars they produce to carry out life functions. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. What does primary succession begin with? A) A mature forest. B) A barren landscape. C) A developed ecosystem. D) A diverse community. Show Answer Correct Answer: B) A barren landscape. 6. A body part or behavior that helps a living thing survive A) Camoflage. B) Adaptation. C) Extiction. D) Instinct. Show Answer Correct Answer: B) Adaptation. 7. Which of the following is an example of a population? A) A single Atlantic salmon. B) All the Atlantic salmon in a river. C) All the living organisms in a river. D) All living and non-living components in a river. Show Answer Correct Answer: B) All the Atlantic salmon in a river. 8. How does climate change affect ecosystems over time? A) It causes ecosystems to become more stable. B) It leads to shifts in species distribution and habitat loss. C) It has no impact on ecosystems. D) It only affects aquatic ecosystems. Show Answer Correct Answer: B) It leads to shifts in species distribution and habitat loss. 9. The process by which different plant life progressively replaces other plant life in an area over time. A) Mass Extinction. B) Background Extinction. C) Succession. D) Evolution. Show Answer Correct Answer: C) Succession. 10. When a disturbance affects an existing community but doesn't completely destroy it what occurs? A) Primary succession. B) Secondary succession. C) Secondary adaptation. D) Primary adaptation. Show Answer Correct Answer: B) Secondary succession. 11. An individual who only eats meat is called a(n) A) Omnivore. B) Carnivore. C) Herbivore. D) Decomposer. Show Answer Correct Answer: B) Carnivore. 12. Which of the following describes the role of mRNA? A) Carries amino acids to the growing chain. B) Copy of DNA made in the nucleus and read at the ribosome. C) Copy of tRNA made in the ribosome. D) The molecule that codes for ribosomes. Show Answer Correct Answer: B) Copy of DNA made in the nucleus and read at the ribosome. 13. How does the carbon cycle contribute to the balance of gases in the atmosphere? A) The carbon cycle helps regulate the levels of carbon dioxide in the atmosphere, thus contributing to the balance of gases. B) The carbon cycle has no impact on the balance of gases in the atmosphere. C) The carbon cycle only contributes to the imbalance of gases in the atmosphere. D) The carbon cycle only affects the levels of oxygen in the atmosphere. Show Answer Correct Answer: A) The carbon cycle helps regulate the levels of carbon dioxide in the atmosphere, thus contributing to the balance of gases. 14. All of the different populations that live in a specific area. A) Community. B) Habitat. C) Ecosystem. D) Village. Show Answer Correct Answer: A) Community. 15. In the ocean, a sea anemone attaches itself to the shell of a hermit crab. The stinging arms of the sea anemone protect the hermit crab, while the movement of the hermit crab brings food to the sea anemone. Which best describes the relationship between the sea anemone and the hermit crab? A) Coexistence. B) Mutualism. C) Competition. D) Parasitism. Show Answer Correct Answer: B) Mutualism. 16. Habitat is the natural surrounding or the living place of an organism /Habitat ialah persekitaran atau tempat tinggal semula jadi sesuatu organismaIs an aquarium a habitat? A) YES. B) NO. C) All the above. D) None of the above. Show Answer Correct Answer: B) NO. 17. Which of the following describes a consumer? A) Organisms that breathe. B) Organisms that use photosynthesis. C) Organisms that have to eat to survive. D) Organisms that have no known predators. Show Answer Correct Answer: C) Organisms that have to eat to survive. 18. Water is lost to the abiotic parts of the biosphere from the biotic parts by ..... A) Precipitation. B) Photosynthesis. C) Transpiration. D) Infiltration. Show Answer Correct Answer: C) Transpiration. 19. A diagram that shows the amount of energy that moves from one feeding level to another is termed ..... A) Energy pyramid. B) Adaptation. C) Autotroph. D) Food web. Show Answer Correct Answer: A) Energy pyramid. 20. What is the role of chlorella in a food chain? A) To provide energy for the body. B) To produce energy for the ecosystem. C) To help put nutrients back into the soil. D) To convert energy from the sun into food. Show Answer Correct Answer: A) To provide energy for the body. 21. Organism that relies on other organisms for its energy and food supply; also called a heterotroph A) Consumer. B) Producer. C) Energy from the sun. D) None of the above. Show Answer Correct Answer: A) Consumer. 22. What is a series of events in which one organism eats another and obtains energy? A) Food web. B) Food chain. C) Energy pyramid. D) None of the above. Show Answer Correct Answer: B) Food chain. 23. Which of the following is not one of the four cycles mentioned? A) Water cycle. B) Oxygen and carbon cycle. C) Nitrogen cycle. D) Sulfur cycle. Show Answer Correct Answer: D) Sulfur cycle. 24. What is the synonym of biotic?Apakah perkataan sama erti biosis? A) Livinghidup. B) Non-livingtidak hidup. C) All the above. D) None of the above. Show Answer Correct Answer: A) Livinghidup. 25. What will most likely happen if squirrels are removed from the food chain? A) The fox will eat acorns. B) The fox population will decrease. C) The trees will produce fewer acorns. D) The mountain lion population will increase. Show Answer Correct Answer: B) The fox population will decrease. ← 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