This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which organism can best be described as a saprotroph? A) A fungus that digests its food externally and absorbs the products of digestion. B) A beetle that feeds by ingesting the dung of other animal species and digesting its food internally. C) A single-celled eukaryote that is able to photosynthesize and consumes smaller organisms by endocytosis. D) A giraffe that feeds by ingesting leaves from an acacia tree. Show Answer Correct Answer: A) A fungus that digests its food externally and absorbs the products of digestion. 2. Which organisms can be found at the first, or lowest, trophic level? A) Consumers. B) Producers. C) Decomposers. D) Composers. Show Answer Correct Answer: B) Producers. 3. A ..... is a set of actions that are meant to help an ecosystem recover from damage. A) Construction plan. B) Subdivision plan. C) Deconstruction plan. D) Restoration plan. Show Answer Correct Answer: D) Restoration plan. 4. Which of the following are factors that could cause extinction? A) Destruction of animals' habitat. B) Climate change. C) Pollution. D) Increased human population (more people). E) ALL of the above could cause extinction. Show Answer Correct Answer: E) ALL of the above could cause extinction. 5. Which type of mining leaves a large footprint on the land? A) Room and pillar mining. B) Open pit mining. C) Drilling. D) Underground mining. Show Answer Correct Answer: B) Open pit mining. 6. By which process to plants convert radiant energy from the Sun into chemical energy? A) Photosynthesis. B) Cellular respiration. C) Biomagnification. D) Bioaccumulation. Show Answer Correct Answer: A) Photosynthesis. 7. By what process is the carbon in fossil fuels released into the atmosphere? A) Combustion. B) Decomposition. C) Erosion. D) Respiration. Show Answer Correct Answer: A) Combustion. 8. What do the arrows on the food chain or food web represent? A) The flow of energy. B) What eats what. C) The predators in the ecosystem. D) None of the above. Show Answer Correct Answer: A) The flow of energy. 9. Complete burning of plant material returns carbon primarily to the ..... A) Herbivores. B) Water. C) Vegetation. D) Atmosphere. Show Answer Correct Answer: D) Atmosphere. 10. Which level does energy flow directly to after the producer level? A) Decomposer. B) Producer. C) Primary consumer. D) Secondary consumer. Show Answer Correct Answer: C) Primary consumer. 11. A community that is specific, uniform and stable is called a A) Adapt community. B) Climax community. C) New commuinty. D) Balanced community. Show Answer Correct Answer: B) Climax community. 12. Which organism is a producer? A) Pine tree. B) Earthworm. C) Mushroom. D) Hawk. Show Answer Correct Answer: A) Pine tree. 13. Why is it important to conserve and protect endangered species? A) To increase the population of non-endangered species. B) Because endangered species are not important. C) To maintain biodiversity, ecological balance, and prevent the loss of valuable genetic resources. D) To allow for the natural extinction of species. Show Answer Correct Answer: C) To maintain biodiversity, ecological balance, and prevent the loss of valuable genetic resources. 14. All of the living parts of an ecosystem are ..... A) Biology. B) Biotic. C) Abiotic. D) Biography. Show Answer Correct Answer: B) Biotic. 15. Place the levels of environment in the correct order. A) Biome, biosphere, population, organism, ecosystem, community. B) Organism, ecosystem, biosphere, population, community, biome. C) Organism, population, community, ecosystem, biome, biosphere. D) Population, community, organism, biome, ecosystem, biosphere. Show Answer Correct Answer: C) Organism, population, community, ecosystem, biome, biosphere. 16. What is the significance of island geography in conservation biology? A) Island geography has no significance in conservation biology. B) Island geography only affects marine species, not terrestrial species. C) Island geography leads to the extinction of all species. D) Island geography provides unique ecosystems and habitats that are isolated from mainland influences, leading to the evolution of distinct species and vulnerability to extinction. Show Answer Correct Answer: D) Island geography provides unique ecosystems and habitats that are isolated from mainland influences, leading to the evolution of distinct species and vulnerability to extinction. 17. A strip mining company wants to lease some land that is currently part of a national park. They promise to reclaim the land should any minerals be mined from the area, and they are willing to pay top dollar for the rights. As an ecologist, what factors would you raise with the local government? A) The threat to local biodiversity. B) Management of the land after the company leaves. C) The new jobs that would be created. D) The increased traffic in the area. Show Answer Correct Answer: A) The threat to local biodiversity. 18. The sum total of a population's use of the biotic and abiotic resources of its habitat constitutes its A) Evolution. B) Range. C) Niche. D) Environment. Show Answer Correct Answer: C) Niche. 19. The benefits provided by ecosystems to humans are called A) Ecosystem adaptations. B) Ecosystem services. C) Ecosystem benefits. D) None of the above. Show Answer Correct Answer: B) Ecosystem services. 20. Decomposers affect all levels of the food web. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Which type of organism "recycles" nutrients back into an ecosystem? A) Decomposers. B) Consumers. C) Producers. D) Omnivores. Show Answer Correct Answer: A) Decomposers. 22. Which of these phrases describes the biotic factors of an ecosystem? A) The number of individual organisms in each trophic level of an ecosystem. B) Any living part of an environment. C) An organism that eats only meat. D) Any non-living part of an environment. Show Answer Correct Answer: B) Any living part of an environment. 23. What is succession? A) A type of plant. B) Change in a community. C) A type of animal. D) A weather pattern. Show Answer Correct Answer: B) Change in a community. 24. Which shows ecological succession? A) A forest remains unchanged. B) A forest fire $\rightarrow$ grasses $\rightarrow$ shrubs $\rightarrow$ trees $\rightarrow$ mature forest. C) A single organism grows. D) A predator eats prey. Show Answer Correct Answer: B) A forest fire $\rightarrow$ grasses $\rightarrow$ shrubs $\rightarrow$ trees $\rightarrow$ mature forest. 25. Hubungan antara dua jenis makhluk hidup yang saling memangsa disebut ..... A) Mutualisme. B) Komensalisme. C) Parasitisme. D) Predasi. Show Answer Correct Answer: D) Predasi. ← 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 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 10Class 12 Biology Chapter 14 Ecosystem Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books