This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the ultimate ORIGINAL source of energy for living things A) Sun. B) Moon. C) Sugar. D) Carbon Dioxide. Show Answer Correct Answer: A) Sun. 2. Which element is the most abundant in the atmosphere? A) Phosphorus. B) Sulfur. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: C) Nitrogen. 3. What is VARIATION? A) Organisms develop in similar ways in the womb. B) The gradual change of species over time. C) Survival of the fittest. D) Differences in traits between members of the same species. Show Answer Correct Answer: D) Differences in traits between members of the same species. 4. Which of the following is MOST likely an indirect value of biodiversity conservation? A) Enjoying recreational activities in natural environments. B) Obtaining lumber from forest trees. C) Obtaining medicinal products from plants. D) Generating an income for the guides of nature tours. Show Answer Correct Answer: A) Enjoying recreational activities in natural environments. 5. Which shows a complete picture of the flow of energy through an ecosystem. A) Food Web. B) Food Chain. Show Answer Correct Answer: A) Food Web. 6. Decayed organic matter in soil A) Humus. B) Clay. C) Silt. D) None of above. Show Answer Correct Answer: A) Humus. 7. A plant has about 10, 000 J of energy. How much energy would a tertiary consumer get from this plant? A) 1J. B) 1000J. C) 10J. D) 100J. Show Answer Correct Answer: C) 10J. 8. What type of symbiosis? *The plover picks and eats scraps of meat from the crocodile's teeth. *The crocodile gets a free teeth-cleaning! A) Commensalism. B) Predation. C) Mutualism. D) Parasitism. Show Answer Correct Answer: C) Mutualism. 9. What is the branch of science that deals with the study of living things and their relationship with the environment? A) Anthropology. B) Ecology. C) Ecosystems. D) None of above. Show Answer Correct Answer: B) Ecology. 10. Which of the following best describes how carbon dioxide in the atmosphere is changed by living organisms? A) It is absorbed by plants during photosynthesis. B) It is exchanged for water vapor through the process of respiration. C) It is created when factory workers burn fossil fuels. D) It is used by plants and animals to convert organic carbon to oxygen. Show Answer Correct Answer: A) It is absorbed by plants during photosynthesis. 11. Types of orchids grow high on the branches of the tall kapok trees of the jungle. This adaptation allows the orchid to get to the light. The tree is not harmed. A) Parasitism. B) Commensalism. C) Mutualism. D) None of above. Show Answer Correct Answer: B) Commensalism. 12. The job or role of an organism in its environment. A) Population. B) Niche. C) Population. D) Community. Show Answer Correct Answer: B) Niche. 13. An adaptation that helps an animal hide from predators A) Extinction. B) Camouflage. C) Migration. D) Hibernation. Show Answer Correct Answer: B) Camouflage. 14. An organism that eats mostly plants is called a(n) A) Producer. B) Scavenger. C) Herbivore. D) Consumer. Show Answer Correct Answer: C) Herbivore. 15. All the living and non-living things in an area A) Ecosystem. B) Population. C) Biosphere. D) Community. Show Answer Correct Answer: A) Ecosystem. 16. The first organism in a food chain is always a(n): A) Producer. B) Sun. C) Carnivore. D) Herbivore. Show Answer Correct Answer: A) Producer. 17. The trophic level is A) A step in a food chain or food web. B) Total amount of tissue within a trophic level. C) The level an organism lives on. D) The ground under an organism. Show Answer Correct Answer: A) A step in a food chain or food web. 18. Which of the following in an ecosystem is classified as BIOTIC? A) Rock. B) Sand. C) Wind. D) Tree. Show Answer Correct Answer: D) Tree. 19. What's another name for consumer? A) Autotroph. B) Cellular Respiration. C) Heterotroph. D) Photosynthesis. Show Answer Correct Answer: C) Heterotroph. 20. A grassland that is located in the middle latitudes, not near the equator, are known as ..... A) Deciduous forests. B) Prairies. C) Tundra. D) Savannas. Show Answer Correct Answer: B) Prairies. 21. Choose the right meaning:save A) To recycle. B) To save. C) Pick. D) None of above. Show Answer Correct Answer: B) To save. 22. What percent of energy is lost at every level of a food chain? A) 100%. B) 50%. C) 90%. D) 10%. E) 75%. Show Answer Correct Answer: C) 90%. 23. What are some Carnivores A) Elephant. B) Penguin. C) Zebra. D) Fish. Show Answer Correct Answer: B) Penguin. 24. How do most producers make their own food? A) Using light energy to make carbohydrates. B) Breaking down remains of organisms. C) Changing water into carbon dioxide. D) Using chemical energy to make carbohydrates. Show Answer Correct Answer: A) Using light energy to make carbohydrates. 25. The photic zone is water deeper than 200 meters. A) False. B) True. Show Answer Correct Answer: A) False. 26. How are animals that prey on other animals classified? A) Herbivores. B) Autotrophs. C) Carnivores. D) Decomposers. Show Answer Correct Answer: C) Carnivores. 27. If an ecosystem has its resources fluctuate, what could happen to the community in that ecosystem? A) The community may go extinct. B) The community will adapt to the changes and reproduce. C) The community will migrate to find eligible resources. D) None of above. Show Answer Correct Answer: A) The community may go extinct. 28. Things found in nature that are useful to people. A) Natural resources. B) Reservoirs. C) Aquifers. D) Deforestation. Show Answer Correct Answer: A) Natural resources. 29. Which sphere includes trees, grasses, and squirrels? A) Cryosphere. B) Geosphere. C) Atmosphere. D) Biosphere. Show Answer Correct Answer: D) Biosphere. 30. A community contains A) Only one species. B) Multiple species. C) Living and non-living components. D) All the similar biomes across the world. Show Answer Correct Answer: B) Multiple species. 31. Animals that may soon die out. A) Endangered species. B) Endangered species. C) Endangered species. D) Endangered species. Show Answer Correct Answer: A) Endangered species. 32. Which of the following means of transportation uses a renewable resource for its energy source? A) Natural gas car. B) Gasoline truck. C) Coal powered steam train. D) Solar powered car. Show Answer Correct Answer: D) Solar powered car. 33. The process of subdividing a niche into smaller niches is called ..... A) Resource partitioning. B) Interspecific competition. C) Commensalism. D) Mutualism. Show Answer Correct Answer: A) Resource partitioning. 34. What type of organisms are always found at the first trophic level? A) Predators. B) Autotrophs. C) Consumers. D) Heterotrophs. Show Answer Correct Answer: B) Autotrophs. 35. The organism that benefits in parasitism is called the: A) Predator. B) Host. C) Parasite. D) Prey. Show Answer Correct Answer: C) Parasite. 36. What's the definition of ecology? A) Eco-Nature Logy-Study. B) Eco-Environment Logy-Study. C) Eco-Government Logy-Study. D) Eco-Life Logy-Study. Show Answer Correct Answer: B) Eco-Environment Logy-Study. 37. Which of the following is an organism that eats only meat? A) Herbivore. B) Carnivore. C) Producer. D) Omnivore. Show Answer Correct Answer: B) Carnivore. 38. This biome has hot summers, cold winters, diverse grasses, trees, and shrubs, and is common in central US. A) Savanna. B) Shrublands. C) Temperate forest. D) Tundra. Show Answer Correct Answer: B) Shrublands. 39. What impact have humans had on the phosphorus cycle? I. Use of phosphorus containing fertilizers II. Increased urbanization of forested areas III. Increased use of phosphorus containing detergents A) I only. B) II only. C) III only. D) I, II, and III. Show Answer Correct Answer: D) I, II, and III. 40. In the nitrogen cycle, denitrifying bacteria convert A) Atmospheric nitrogen to ammonium compounds. B) Atmospheric nitrogen to nitrates. C) Ammonium compounds to nitrates. D) Nitrates to atmospheric nitrogen. Show Answer Correct Answer: D) Nitrates to atmospheric nitrogen. 41. What is the correct decomposer? A) Fungus. B) Sun. C) Tree. D) Weather. Show Answer Correct Answer: A) Fungus. 42. The second link in a food chain is a ..... A) Herbivore. B) Producer. C) Carnivore. D) Consumer. Show Answer Correct Answer: A) Herbivore. 43. The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that A) . ecosystems are interconnected and human action can alter ecosystem equilibrium. B) Recycling programs have failed to conserve biotic resources. C) Natural processes can alter ecosystem stability. D) Direct harvesting practices have led to irreversible destruction of ecosystems. Show Answer Correct Answer: A) . ecosystems are interconnected and human action can alter ecosystem equilibrium. 44. Environmental factor boundary where life is impossible A) Pessimum. B) Maximum. C) Danger points. D) Optimum. E) Minimum. Show Answer Correct Answer: C) Danger points. 45. An environment that is more productive and more resistant to stress and changes is? A) Biodiverse. B) Rich. C) Rich and Biodiverse. D) Neither. Show Answer Correct Answer: C) Rich and Biodiverse. 46. A group of individuals of the same species that live in the same ecosystem is considered a A) Animals. B) Organism. C) Population. D) Community. Show Answer Correct Answer: C) Population. 47. Ozone depleting substances have been depleting the ozone layer since the 1970's. Which example could be classified as a result of a hole in the ozone layer? A) Less rainfall occurs over the Indian Ocean. B) More ultraviolet radiation reaches Earth's surface. C) More pollution is released into Earth's atmosphere. D) Ocean current circulation has been greatly affected. Show Answer Correct Answer: B) More ultraviolet radiation reaches Earth's surface. 48. What would happen within a few months after the formation of a volcanic island? A) Grasses would appear. B) Trees and shrubs would grow. C) Lichen and moss would colonize the rocks. D) Organic soil would cover the island. Show Answer Correct Answer: C) Lichen and moss would colonize the rocks. 49. Intraspecific competition means A) Organisms from different species compete. B) Organisms compete and one survives. C) Organisms from the same species compete. D) Organisms share resources. Show Answer Correct Answer: C) Organisms from the same species compete. 50. All of the following contribute directly to soil formation EXCEPT A) Volcanic eruptions. B) Erosion of rock by weather. C) Lichens. D) Decomposition of organisms. Show Answer Correct Answer: A) Volcanic eruptions. 51. Non-living things in the environment are called ..... A) Parasitism. B) Abiotic. C) Ecology. D) Population. Show Answer Correct Answer: B) Abiotic. 52. A worm that breaks down soil, waste, and dead things is a ..... A) Abiotic. B) Predator. C) Prey. D) Decomposer. Show Answer Correct Answer: D) Decomposer. 53. A relationship between two organisms in which one benefits and the other is harmed. A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: C) Parasitism. 54. Producer = grassPrimary consumer = squirrel, deer, rabbitSecondary consumer = fox, bear In which biome would you most likely see this food chain? A) Taiga. B) Deciduous forest. C) Savanna. D) Tundra. Show Answer Correct Answer: B) Deciduous forest. 55. Which of the following in NOT a characteristic of eukaryotic cells? A) Large. B) Lack membrane-bound organelles. C) DNA is separated from the cytoplasm by a nuclear membrane. D) Complex. Show Answer Correct Answer: B) Lack membrane-bound organelles. 56. Organisms in an ecosystem can have the same: A) Habitat. B) Niche. Show Answer Correct Answer: A) Habitat. 57. A limiting factor ..... A) Is Something that stops the growth or causes a decline in population. B) Means overpopulated. C) Is extinct. D) Is endangered. Show Answer Correct Answer: A) Is Something that stops the growth or causes a decline in population. 58. Match:organic ..... A) Food. B) Layer. C) Waste. D) Rubbish. Show Answer Correct Answer: A) Food. 59. How do animals get the energy they need to survive? A) They use sunlight. B) They drink water. C) They drink water and juice. D) They eat plants or other animals. Show Answer Correct Answer: D) They eat plants or other animals. 60. In the energy pyramid, an organism that eats the secondary consumer is called A) Primary consumer. B) Tertiary consumer. C) Sun. D) Producer. Show Answer Correct Answer: B) Tertiary consumer. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books