This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 17 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When a population grows larger than the carrying capacity, limiting factors will cause the population to ..... A) Decrease. B) Increase. C) Stay the same. D) None of above. Show Answer Correct Answer: A) Decrease. 2. Where is carbon stored in the environment? A) Fossil fuels. B) Wood of trees. C) Calcium carbonate (shells and bones). D) All of the above. Show Answer Correct Answer: D) All of the above. 3. Hummingbirds eat flower nectar and small insects. To which nutritional group do they belong? A) Autotrophs. B) More destructive. C) Saprotrophs. D) Consumers. Show Answer Correct Answer: D) Consumers. 4. Growing plants for food, or growing crops is called ..... A) Deforestation. B) Cultivation. C) Flooding. D) Urban development. Show Answer Correct Answer: B) Cultivation. 5. This type of organism eats only plants. A) Producer. B) Detritivore. C) Herbivore. D) Omnivore. Show Answer Correct Answer: C) Herbivore. 6. Which is an example of innate behavior? A) Bears leaning to catch fish. B) Birds chirping when hatched. C) Human babies speaking words. D) Pond ducks flocking to be fed. Show Answer Correct Answer: B) Birds chirping when hatched. 7. A resource that cannot replenish itself is ..... A) Non-renewable. B) Renewable. Show Answer Correct Answer: A) Non-renewable. 8. The continent with the most amount of biodiversity in the world is A) North America. B) Asia. C) Europe. D) South America. Show Answer Correct Answer: D) South America. 9. Plants both trying to get sunlight are A) Mutualism. B) Competition. C) Parasitism. D) Commensalism. Show Answer Correct Answer: B) Competition. 10. Barnacles that grow on the bottom of a whale without harming it or giving it any real advantage would be an example of ..... A) Mutualism. B) Commensalism. C) Predation. D) Parasitism. Show Answer Correct Answer: B) Commensalism. 11. Which of the following is more likely a tertiary consumer? A) Cardinal. B) Rabbit. C) Frog. D) Wolf. Show Answer Correct Answer: D) Wolf. 12. Water temperature would be an example of ..... A) A biotic factor. B) An abiotic factor. Show Answer Correct Answer: B) An abiotic factor. 13. How could you use less water? A) Do extra loads of laundry. B) Water your lawn every day. C) Leave the water running while brushing your teeth. D) Take a shorter shower. Show Answer Correct Answer: D) Take a shorter shower. 14. The habitat is the role of a species in its ecosystem. A) True. B) False. Show Answer Correct Answer: A) True. 15. Organism, populations, and communities include only biotic factors (living things). A) False. B) True. Show Answer Correct Answer: B) True. 16. What has caused the ozone to become thin in spots? A) Flying objects. B) Carbon dioxide. C) Extreme weather. D) Human polution. Show Answer Correct Answer: D) Human polution. 17. Which organism breaks down substances at the microscopic level? A) Producer. B) Consumer. C) Decoposer. D) Detritivore. Show Answer Correct Answer: C) Decoposer. 18. Which of the following levels of organization is the most complex? A) Organism. B) Community. C) Ecosystem. D) Population. Show Answer Correct Answer: C) Ecosystem. 19. Why are decomposers important in an ecosystem? A) They make food for other organisms. B) They are prey for predators. C) They eat dead animals. D) They return nutrients to the soil. Show Answer Correct Answer: D) They return nutrients to the soil. 20. What is a symbiotic relationship in which both organisms benefit? A) Parasitism. B) Competition. C) Mutualism. D) Commensalism. Show Answer Correct Answer: C) Mutualism. 21. A ..... is the role an organism has in the community. A) Niche. B) Mutual relationship. C) Competition. D) None of above. Show Answer Correct Answer: A) Niche. 22. All of the populations that interact in an area A) Biosphere. B) Population. C) Community. D) Ecosystem. E) Organism. Show Answer Correct Answer: C) Community. 23. "Everything in nature is connected with each other-nature knows everything" -whose law is it? A) M.Taris. B) B.Commoner. C) D. Chardin. D) R. Pierre. E) J. Lamarck. Show Answer Correct Answer: B) B.Commoner. 24. The best way to represent a large, complex system, such as the nitrogen cycle, would be a A) Model. B) Bar graph. C) Graph. D) Written paragraph. Show Answer Correct Answer: A) Model. 25. Which biome is very hot during the day, cool at night, and has very little rainfall and animal life/vegetation? A) Tundra. B) Grassland. C) Shrubland. D) Desert. Show Answer Correct Answer: D) Desert. 26. Example of a consumer A) Bacteria. B) Mushroom. C) Worm. D) Hawk. Show Answer Correct Answer: D) Hawk. 27. What are renewable resources? A) Resources that formed over millions of years. B) Resources that exist only in rural areas. C) . Resources that are used faster than they form. D) Resources that can replenish themselves over time. Show Answer Correct Answer: D) Resources that can replenish themselves over time. 28. The study of the interactions between organisms and their environment is called ..... A) Science. B) Ecology. C) Ecosystem. D) Organism. Show Answer Correct Answer: B) Ecology. 29. How would a sudden increase in parasites, within a population, affect the population's growth? A) The death rate would increase. B) The growth rate would continue at a steady pace. C) The growth rate would be unaffected. D) The birth rate would increase. Show Answer Correct Answer: A) The death rate would increase. 30. A caterpillar that eats the leaves of an Oak tree is an example of a(n): A) Herbivore. B) Carnivore. C) Omnivore. D) None of above. Show Answer Correct Answer: A) Herbivore. 31. Which of the following leads to a decrease in biodiversity? A) Protection of ecosystems. B) Pollution control. C) Introduction of exotic or invasive species. D) Selective cutting. Show Answer Correct Answer: C) Introduction of exotic or invasive species. 32. Ecological Succession is A) Series of gradual changes that occur in a community following a disturbance. B) Succession that occurs in an area in which no trace of a previous community is present. C) Type of succession that occurs in and area that was only partially destroyed by disturbances. D) Relationship in which two species live close together. Show Answer Correct Answer: A) Series of gradual changes that occur in a community following a disturbance. 33. What best describes the climate in the desert? A) Dry. B) Windy. C) Hot. D) Warm. Show Answer Correct Answer: A) Dry. 34. Which process removes water vapour from the atmosphere? A) A Evaporation. B) D Neutralization. C) B Condensation. D) C Nitrogen fixation. Show Answer Correct Answer: C) B Condensation. 35. Tom has a bike. .....bike is new. A) My. B) Her. C) Your. D) His. Show Answer Correct Answer: D) His. 36. The highest form of communication is to kill the prey, that is, to feed on it A) Do not swing. B) Competition. C) Predatory. D) Symbiosis. E) Parasitic. Show Answer Correct Answer: C) Predatory. 37. What gas from the list below is a cause for global warming? A) Urethane. B) Oxygen. C) Carbon Dioxide. D) None of above. Show Answer Correct Answer: C) Carbon Dioxide. 38. What animal from the list below lives in the desert ecosystem? A) Rattlesnake. B) Jaguar. C) Penguin. D) Jellyfish. Show Answer Correct Answer: A) Rattlesnake. 39. Part of a cycle that holds an element or water for a long period of time is called a ..... The ocean is a ..... for water. A) Ecosystem. B) Reservoir. Show Answer Correct Answer: B) Reservoir. 40. An organism that consumes only other animals is also known as a what? A) Heterotroph. B) Autotroph. Show Answer Correct Answer: A) Heterotroph. 41. What happens during the process of nitrogen-fixation? A) Nitrogen compounds turn into atmospheric nitrogen. B) Nitrogen in atmosphere converted into nitrogen compounds. C) Nitrogen is consumed by plants. D) None of above. Show Answer Correct Answer: B) Nitrogen in atmosphere converted into nitrogen compounds. 42. What source of energy provides the majority of energy for the United States? A) Coal. B) Petroleum. C) Natural gas. D) Nuclear power. Show Answer Correct Answer: B) Petroleum. 43. How many species are there of animals, plants, and insects known to mankind that live in the rainforest? A) One fourth. B) 10, 000, 000. C) More than half. D) Less than half. Show Answer Correct Answer: C) More than half. 44. What is a climax community? A) A community that is constantly changing in species composition. B) A community that is in the early stages of development. C) A stable, mature community that undergoes little or no change in species over time. D) None of above. Show Answer Correct Answer: C) A stable, mature community that undergoes little or no change in species over time. 45. How many percent does the transfer of energy from an organism to another? A) 5 %. B) 10%. C) 20%. D) 15%. Show Answer Correct Answer: B) 10%. 46. What is symbiosis? A) Organisms that share physical characteristics and mate. B) Non-living things in an environment. C) A series of overlapping food chains. D) A close relationship between two or more different species. Show Answer Correct Answer: D) A close relationship between two or more different species. 47. The knife is very ..... You have to be careful. A) Sharp. B) Sad. C) Good. D) Not sharp. Show Answer Correct Answer: A) Sharp. 48. Ecosystem:definition A) A population & the abiotic factors that affect them. B) A population & the biotic factors that affect them. C) A community & the abiotic factors that affect them. D) A community & the biotic factors that affect them. Show Answer Correct Answer: C) A community & the abiotic factors that affect them. 49. The final stable community of plants and animals is called: A) Pioneer community. B) Farmland. C) Climax community. D) Old field. Show Answer Correct Answer: C) Climax community. 50. An elk eats grass. A grizzly bear eats the elk. This is an example of a simple linear ..... A) Food chain. B) Food web. C) Succession. D) Pyramid of numbers. Show Answer Correct Answer: A) Food chain. 51. Which is NOT caused by acid rain? A) Dying fish. B) Spread of disease. C) Weakened trees. D) Damage to statues. Show Answer Correct Answer: B) Spread of disease. 52. Which process contributes carbon dioxide to the atmosphere? A) Respiration. B) Photosynthesis. C) Tree farms. D) None of above. Show Answer Correct Answer: A) Respiration. 53. Which of the following is an example of competition? A) Birds migrate south. B) Pet dog keeps a man company. C) Two vultures fight over a dead rabbit. D) A bear eats a fish. Show Answer Correct Answer: C) Two vultures fight over a dead rabbit. 54. Word that means the same thing as consumer is ..... A) Carbohydrate. B) Heterotroph. C) Autotroph. D) Producer. Show Answer Correct Answer: B) Heterotroph. 55. Most of the energy we eat comes, originally, from the ..... A) Internet. B) Soil. C) Sun. D) Meat. Show Answer Correct Answer: C) Sun. 56. The correct order of ecological organization from the smallest to the largest is ..... A) Organism, community, population, ecosystem, biosphere, biome. B) Population, organism, biosphere, community, ecosystem, biome. C) Organism, population, community, ecosystem, biome, biosphere. D) Biosphere, biome, ecosystem, community, population, organism. Show Answer Correct Answer: C) Organism, population, community, ecosystem, biome, biosphere. 57. This shows the direction and path of energy flow through each trophic level in an ecosystem A) Carrying Capacity. B) Energy Pyramid. C) Food Chain. D) Food Web. Show Answer Correct Answer: B) Energy Pyramid. 58. Where do cheetahs get the energy they need to run fast? A) Directly from sunlight. B) From the food it eats. C) From water it drinks. D) From the wastes it produces. Show Answer Correct Answer: B) From the food it eats. 59. Individuals of a population who exit an area. A) Emigration. B) Mitigation. C) Lingation. D) Immigration. Show Answer Correct Answer: A) Emigration. 60. Limiting factor not determined by population density A) Carrying capacity. B) Density-dependent. C) Density-independent. D) Biotic potential. Show Answer Correct Answer: C) Density-independent. ← 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