This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 50 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 50 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does water transfer when it evaporates from the ocean? A) From the hydrosphere to the geosphere. B) Completely within the hydrosphere. C) From the hydrosphere to the atmosphere. D) From the biosphere to the hydrosphere. Show Answer Correct Answer: C) From the hydrosphere to the atmosphere. 2. Long cyndrical2. many nucleus are located on the edge3. work under conciousness (voluntary)the characteristics above is describing ..... muscle cell A) Cardiac. B) Skeletal. C) Smooth. D) Skeletal dan cardiac. Show Answer Correct Answer: B) Skeletal. 3. Biology Ecosystems A) The introduction of a new predator species. B) An increase in plant biodiversity. C) A decrease in sunlight availability. D) The migration of herbivores to another region. Show Answer Correct Answer: A) The introduction of a new predator species. 4. A place in which an organism lives. A) Population. B) Habitat. C) Ecosystem. D) Community. Show Answer Correct Answer: B) Habitat. 5. Study of the relationships between the populations in a community and their environment. A) Ecology. B) Ecosystem. C) Abiotic. D) Biology. Show Answer Correct Answer: A) Ecology. 6. A medium sized ecosystem such as a lake or forest A) Micro ecosystem. B) Messo ecosystem. C) Biome. D) None of the above. Show Answer Correct Answer: B) Messo ecosystem. 7. An ecosystem is a few communities that live together in a habitat and interact with each other ( ..... components) but also non-living ..... components such as water, air and soil to create a balanced system A) Probiotic conbiotic. B) Abiotic biotic. C) Biotic abiotic. D) Biotic homobiotic. Show Answer Correct Answer: C) Biotic abiotic. 8. The approximate amount of energy that is transferred between each trophic level is: A) 10%. B) 0.1%. C) 90%. D) It totally depends on the ecosystem. Show Answer Correct Answer: A) 10%. 9. Ecological Restoration A) Helping damaged ecosystems recover to their natural state. B) Creating new ecosystems from scratch. C) Preserving existing ecosystems without any changes. D) Introducing non-native species to enhance biodiversity. Show Answer Correct Answer: A) Helping damaged ecosystems recover to their natural state. 10. Logistic growth is: A) Unlimited. B) Levels off due to limiting factors. C) Instant decline. D) Only small populations. Show Answer Correct Answer: B) Levels off due to limiting factors. 11. What are consumers that eat both plants and animals A) Herbivores. B) Carnivores. C) Omnivores. D) None of the above. Show Answer Correct Answer: C) Omnivores. 12. Which of the following are all abiotic? A) Temperature, Light, Rain, Gravity, Heat. B) Water, Fish, Insects, Lily Plants. C) Dogs, Meat, Cats, Catnip. D) Lion, Pride Rock, Warthog, Meerkat. Show Answer Correct Answer: A) Temperature, Light, Rain, Gravity, Heat. 13. A carnivore is referred to as a ..... consumer. A) Producer. B) Primary. C) Secondary. D) None of the above. Show Answer Correct Answer: C) Secondary. 14. What does the plant use as well as water in photosynthesis? A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) Sugar. Show Answer Correct Answer: A) Carbon dioxide. 15. Before plants can reuse many organic materials, the materials must be broken down by ..... A) Parasites. B) Viruses. C) Decomposers. D) Scavengers. Show Answer Correct Answer: C) Decomposers. 16. Ideal percentage of forests on Earth is A) 0.23. B) 0.33. C) 0.13. D) 0.45. Show Answer Correct Answer: B) 0.33. 17. A relationship where both organisms benefit is called ..... A) Mutualism. B) Commensalism. C) Parasitism. D) None of the above. Show Answer Correct Answer: A) Mutualism. 18. The difference between saprotrophs and detritovores is A) Saprotrophs digest externally and detritovores digest internally. B) Saprotrophs digest internally and detritovores digest externally. C) Saprotrophs are autotrophs and detritovores are decomposers. D) Saprotrophs are decomposers and detritovores are autrotrophs. Show Answer Correct Answer: A) Saprotrophs digest externally and detritovores digest internally. 19. Is abundant, but most organisms can't use it. Only certain types of bacteria can convert it into ammonia through a process called nitrogen fixation A) Nitrogen gas. B) Oxygen gas. C) Sulfur. D) None of the above. Show Answer Correct Answer: A) Nitrogen gas. 20. In a food chain, the plant is called a: A) Consumer. B) Producer. C) Carnivore. D) Herbivore. Show Answer Correct Answer: B) Producer. 21. Which of the following can NOT be recycled in an ecosystem? A) Minerals. B) Water. C) Nutrients. D) Energy. Show Answer Correct Answer: D) Energy. 22. Which of the following is NOT a level of organization in ecosystems? A) Community. B) Species. C) Population. D) Ecosystem. Show Answer Correct Answer: B) Species. 23. Which extinction event is considered the most severe in the history of life on Earth? A) Ordovician-Silurian Extinction. B) Permian-Triassic Extinction. C) Cretaceous-Tertiary Extinction. D) Holocene Extinction. Show Answer Correct Answer: B) Permian-Triassic Extinction. 24. Thomas constructs a model by completing the following steps.1) Draw a diagram that shows where oxygen is found on Earth, including the atmosphere, bodies of water, land and living things.2) Draw arrows to show how oxygen moves and changes from one location to another.3) Label each arrow.What type of ecological model has Thomas constructed? A) Biogeochemical cycle. B) Energy pyramid. C) Food web. D) Geological system. Show Answer Correct Answer: A) Biogeochemical cycle. 25. Which of the following leads to a decrease in biodiversity? A) Protection of ecosystems. B) Pollution control. C) Selective cutting. D) Introduction of exotic or invasive species. Show Answer Correct Answer: D) Introduction of exotic or invasive species. ← 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