This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The framework of organic molecules essential to all organisms is composed mainly of carbon atoms. Which processes are involved in the cycling of carbon within an environment? A) Diffusion and transpiration. B) Evaporation and condensation. C) Transcription and translation. D) Photosynthesis and respiration. Show Answer Correct Answer: D) Photosynthesis and respiration. 2. Habitat restoration A) Actions taken to repair and rebuild damaged ecosystems. B) A method of urban development that prioritizes green spaces. C) A process of introducing non-native species to an area. D) A technique for increasing agricultural productivity. Show Answer Correct Answer: A) Actions taken to repair and rebuild damaged ecosystems. 3. Community A) A single member of a species; only biotic. B) A group of the same species; only biotic. C) A group of populations; only biotic. D) Multiple communities within a similar geographic location; biotic and abiotic. E) Multiple ecosystems on earth; biotic and abiotic. Show Answer Correct Answer: C) A group of populations; only biotic. 4. A/An ..... refers to the role of a species in its ecosystem. A) Habitat. B) Niche. C) Ecology. D) Factor. Show Answer Correct Answer: B) Niche. 5. The smallest ecosystem such as a mud puddle or under a log A) Micro ecosystem. B) Messo ecosystem. C) Biome. D) None of the above. Show Answer Correct Answer: A) Micro ecosystem. 6. Organism that make their own food are called as ..... A) Heterotrophs. B) Carnivores. C) Herbivores. D) Autotrophs. Show Answer Correct Answer: D) Autotrophs. 7. Which of the following describes a enzyme? A) A protein that speeds up chemical reactions. B) A type of molecule that codes for our genetic information. C) All the above. D) None of the above. Show Answer Correct Answer: A) A protein that speeds up chemical reactions. 8. How large is the average Canadian's ecological footprint? A) 1 football field. B) 17 football fields. C) 10 football fields. D) 107 football fields. Show Answer Correct Answer: C) 10 football fields. 9. What equipment is used to estimate the number of ground crawling insects? A) Quadrat. B) Pitfall trap. C) Transect. D) Net. Show Answer Correct Answer: B) Pitfall trap. 10. What is the current geological time period referred to in the video? A) Pleistocene. B) Anthropocene. C) Holocene. D) Mesozoic. Show Answer Correct Answer: B) Anthropocene. 11. Which term best describes all living and non-living components interacting together in a given area? A) Habitat. B) Population. C) Ecosystem. D) Community. Show Answer Correct Answer: C) Ecosystem. 12. What are the two main types of ecosystems that exist? A) Urban and forest. B) Natural and artificial. C) Terrestrial and aquatic. D) Natural and industrial. Show Answer Correct Answer: B) Natural and artificial. 13. What is one of the impacts of climate change discussed? A) Decrease in global temperatures. B) Increased urbanization. C) Stabilization of ecosystems. D) Increased frequency and severity of natural disasters. Show Answer Correct Answer: D) Increased frequency and severity of natural disasters. 14. Food molecules in an ecosystem can be traced back to ..... A) Plants. B) The sun. C) The ground. D) None of these. Show Answer Correct Answer: B) The sun. 15. Small pieces of dead or decaying plant or animal remains A) Biomass. B) Detritus. C) Energy pyramid. D) None of the above. Show Answer Correct Answer: B) Detritus. 16. Camouflage typically evolves as a result of A) Mutualism. B) Herbivory. C) Predation. D) Interspecific competition. Show Answer Correct Answer: C) Predation. 17. Which step of the water cycle follows liquid evaporating and changing to water vapour? A) Vapour condenses and forms ice crystals or water droplets. B) Water enters lakes, oceans, the soil or groundwater. C) Water droplets fall to the Earth as rain, hail or snow. D) Water droplets collect and form clouds. Show Answer Correct Answer: A) Vapour condenses and forms ice crystals or water droplets. 18. Carnivores, herbivores, omnivores, and scavengers are all examples of ..... A) Producers. B) Consumers. C) Decomposers. D) Abiotic factors. Show Answer Correct Answer: B) Consumers. 19. An organism that eats only plants. A) Herbivore. B) Carnivore. C) Omnivore. D) Producer. Show Answer Correct Answer: A) Herbivore. 20. What is the ultimate source of energy in any food chain? A) The sun. B) Producers. C) Consumers. D) Decomposers. Show Answer Correct Answer: A) The sun. 21. Which of the following things is NOT a characteristic of ALL living things? A) Ability to reproduce. B) Displays organization. C) Maintains homeostasis. D) Obtains energy through photosynthesis. Show Answer Correct Answer: D) Obtains energy through photosynthesis. 22. What did the Natural History Museum report about species diversity? A) It is increasing rapidly. B) It is stable. C) It is critically low in 58% of land ecosystems. D) It has no correlation with human activity. Show Answer Correct Answer: C) It is critically low in 58% of land ecosystems. 23. Define mutualism in ecological terms. A) Mutualism is a relationship where one species benefits at the expense of another. B) Mutualism is a symbiotic relationship where both species benefit. C) Mutualism is a type of competition between two species for resources. D) Mutualism is a relationship where both species are harmed. Show Answer Correct Answer: B) Mutualism is a symbiotic relationship where both species benefit. 24. Last level of Organization A) Cells. B) Tissues. C) Organs. D) Organ System. E) Organism. Show Answer Correct Answer: E) Organism. 25. Methanogens produce methane gas. What is the gas converted to in the atmosphere? A) Carbon dioxide and oxygen. B) Ethanol and carbon dioxide. C) Carbon monoxide and ozone. D) Carbon dioxide and water. Show Answer Correct Answer: D) Carbon dioxide and water. ← 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 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books