This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 30 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A carbon "sink" is best described as: A) A reservoir that readily releases carbon to another reservoir. B) A carbon reservoir that is releasing more carbon than it is taking in. C) Something that causes carbon to leak out to the atmosphere. D) A carbon reservoir that stores more carbon that it is releasing. Show Answer Correct Answer: D) A carbon reservoir that stores more carbon that it is releasing. 2. Match:carbon..... A) Oxygen. B) Dioxide. C) Fuels. D) Acid. Show Answer Correct Answer: B) Dioxide. 3. A living thing that affects the ecosystem A) Biotic Factor. B) Abiotic Factor. Show Answer Correct Answer: A) Biotic Factor. 4. There is a hole in the ..... A) Bucket. B) Pants. C) House. D) Trousers. Show Answer Correct Answer: A) Bucket. 5. This type of consumer only feeds on the bodies of dead animals. A) Carnivore. B) Decomposer. C) Scavenger. D) Herbivore. Show Answer Correct Answer: C) Scavenger. 6. What body systems work together to provide glucose to the cells for cellular respiration? A) Excretory + respiratory. B) Circulatory + digestive system. C) Endocrine + digestive. D) Nervous + circulatory. Show Answer Correct Answer: B) Circulatory + digestive system. 7. Carbon can be found in ..... A) The atmosphere. B) Soil. C) Fossil fuels. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. What is the result of using fossil fuels more rapidly than they are formed? A) The reserves will eventually be used up. B) The reserves will be refilled more quickly. C) The reserves will not be affected. D) The price of fossil fuels will fall. Show Answer Correct Answer: A) The reserves will eventually be used up. 9. Non-living factor that affects an ecosystem A) Abiotic factor. B) Biome. C) Food chain. D) Biotic factor. Show Answer Correct Answer: A) Abiotic factor. 10. What is produced as a result of photosynthesis? A) Glucose (sugar) and chlorophyll. B) Water and light energy. C) Glucose (sugar) and oxygen. D) Carbon dioxide and water. Show Answer Correct Answer: C) Glucose (sugar) and oxygen. 11. All biogeochemical cycles on Earth would break down without these organisms. A) Decomposers. B) Omnivores. C) Herbivores. D) Carnivores. Show Answer Correct Answer: A) Decomposers. 12. In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen? A) They move into and out of living systems. B) They are only found in abiotic factors. C) They move out of living systems and do not return. D) They move into living systems and remain there. Show Answer Correct Answer: A) They move into and out of living systems. 13. Which nutrient does not cycle through the atmosphere in the form of a gas? A) Carbon. B) Nitrogen. C) Phosphorus. D) Oxygen. Show Answer Correct Answer: C) Phosphorus. 14. The ecosystem is comprised of both ..... and ..... factors. A) Rain and shine. B) Biotic and abiotic. C) Earth and environment. D) None of above. Show Answer Correct Answer: B) Biotic and abiotic. 15. The amount of energy that gets passes from each organism onto the next organism in the energy pyramid is this amount: ..... A) 10 percent'. B) 90 percent. C) None. D) None of above. Show Answer Correct Answer: A) 10 percent'. 16. What are the dependent and independent variables? A) Temp is dependent and sales is independent. B) Temp is independent and sales is dependent. C) Time. D) None. Show Answer Correct Answer: B) Temp is independent and sales is dependent. 17. Organisms that eat primary consumers A) Secondary consumers. B) Primary consumer. C) Tertiary consumers. D) Producers. Show Answer Correct Answer: A) Secondary consumers. 18. A model that shows all of the possible feeding relationships in an ecosystem is called a(n) ..... A) Energy pyramid. B) Food web. C) Food pyramid. D) Food chain. Show Answer Correct Answer: B) Food web. 19. Nuclear reaction A) Addition reaction. B) Nuclear reaction. C) Half reaction. D) Substitution reaction. Show Answer Correct Answer: B) Nuclear reaction. 20. Cell theory states that ..... A) Cells cannot be destroyed. B) Cells are cool. C) Cells are microscopic. D) Cells are the basic building block of life. Show Answer Correct Answer: D) Cells are the basic building block of life. 21. Organism that hunts and consumes another organism A) Predator. B) Omnivore. C) Scavenger. D) Prey. Show Answer Correct Answer: A) Predator. 22. How does climate determine plant growth? A) Climate determines the average temperature and precipitation, the length of the growing season, and the quality of the soil, including levels of soil nutrients. B) Climate determines the average temperature and precipitation. Show Answer Correct Answer: A) Climate determines the average temperature and precipitation, the length of the growing season, and the quality of the soil, including levels of soil nutrients. 23. A relationship where one organism benefits while the other gets nothing is called ..... A) Commensalism. B) Parasitism. C) Mutualism. D) Symbiosis. Show Answer Correct Answer: A) Commensalism. 24. Shifting winds causes major rain storms which floods rivers, lakes and streams. Which 2 spheres are interacting in this event? A) Hydrosphere and atmosphere. B) Hydrosphere and biosphere. C) Biosphere and atmosphere. D) Geosphere and hydrosphere. Show Answer Correct Answer: A) Hydrosphere and atmosphere. 25. A thing that eats other organisms. A) Food chain. B) Producer. C) Decoposer. D) Consumer. Show Answer Correct Answer: D) Consumer. 26. We need to ..... the world and save energy. A) Look after. B) Eat. C) Help. D) Drink. Show Answer Correct Answer: A) Look after. 27. A frog and its lily pad would be considered a A) Population. B) Ecosystem. C) Organism. D) Community. Show Answer Correct Answer: D) Community. 28. Which of the following statements best describes the concept of NPP (Net Primary Production) A) Energy captured minus energy lost. B) Total amount of energy lost. C) Total amount of energy available within an ecosystem. D) Total amount of energy produced from photosynthesis. Show Answer Correct Answer: A) Energy captured minus energy lost. 29. Are mutations always harmful? A) Yes. B) No. Show Answer Correct Answer: B) No. 30. Ostriches and Gazelles feed next to each other. They both watch for predators and alert each other to danger. Since the visual abilities of the two species are different, they can each identify threats the other animal would not as readily see. A) Commensalism. B) Parasitism. C) Competition. D) Mutualism. Show Answer Correct Answer: D) Mutualism. 31. A place where an organism lives. A) Population. B) Terrain. C) Community. D) Habitat. Show Answer Correct Answer: D) Habitat. 32. An organism that is a carnivore that only feeds on the bodies of dead organisms A) Omnivore. B) Herbivore. C) Scavenger. D) Carnivore. Show Answer Correct Answer: C) Scavenger. 33. Which of the following best describes climate? A) Day to day conditions of the atmosphere at a place in regards to heat, dryness, sunshine, wind, rain, etc. B) Long-term conditions (months/years) of the atmosphere at a place in regards to heat, dryness, sunshine, wind, rain, etc. Show Answer Correct Answer: B) Long-term conditions (months/years) of the atmosphere at a place in regards to heat, dryness, sunshine, wind, rain, etc. 34. If a population's age structure diagram has a large base compared to the middle, then the population is A) Growing rapidly. B) Growing slowly. C) Not growing. D) None of above. Show Answer Correct Answer: A) Growing rapidly. 35. A tick living on a dog represents which type of relationship. A) Mutualism. B) Commensalism. C) Symbolism. D) Parasitism. Show Answer Correct Answer: D) Parasitism. 36. Which of the following is a consequence of biological magnification? A) Biological magnification has no effect on ecosystems. B) Toxic chemicals in the environment pose greater risk to top-level predators than to primary consumers. C) Only a small portion of the energy captured by producers is transferred to consumers. D) Populations of top-level predators are generally smaller than populations of primary consumers. Show Answer Correct Answer: B) Toxic chemicals in the environment pose greater risk to top-level predators than to primary consumers. 37. Which of the following would have a negative impact on an ecosystem A) Constructing highways. B) Planting trees. C) Recycling paper. D) None of above. Show Answer Correct Answer: A) Constructing highways. 38. Invasive species ..... choose the correct options A) Can break the natural balance in an ecosystem. B) Live in an ecosystem from a very long time. C) Can arrive in a place because of men. D) None of above. Show Answer Correct Answer: A) Can break the natural balance in an ecosystem. 39. What is the MOST COMMON type of DECOMPOSER? A) Mushrooms. B) Lions. C) Ants. D) Hawks. Show Answer Correct Answer: A) Mushrooms. 40. A collection of different populations that live in a specific area/habitat. A) Biome. B) Community. C) Niche. D) Ecosystem. Show Answer Correct Answer: B) Community. 41. Carbon dioxide is a gas produced by ..... and used by ..... A) Plants and animals. B) Carbon and photosynthesis. C) Animals and plants. D) Photosynthesis. Show Answer Correct Answer: C) Animals and plants. 42. Brown Mix have 9 materials that can be use for compost. Which one of the materials below that cannot be use for Brown Mix? A) Straw or hay. B) Dryer lint. C) Corrugated cardboard. D) Plastic bottles. Show Answer Correct Answer: D) Plastic bottles. 43. The Interactions between living and non living things in an environment A) Weather. B) Energy. C) Ecology. D) Waves. Show Answer Correct Answer: C) Ecology. 44. What impact do the amounts of available energy, water, and oxygen have on an ecosystem? A) They act as limiting factors. B) ]They are used as nutrients. C) They recycle the residue of dead organisms. D) They control environmental temperature. Show Answer Correct Answer: A) They act as limiting factors. 45. A deep body of water with organisms adapted to cold, darkness, and very high water pressure. A) Coral reef. B) Wetland. C) River. D) Deep sea. Show Answer Correct Answer: D) Deep sea. 46. Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not. A) Competition. B) Parasitism. C) Commensalism. D) Mutualism. Show Answer Correct Answer: C) Commensalism. 47. Groups of different species living in the same area at the same time A) Ecosystems. B) Populations. C) Communities. D) Biosphere. Show Answer Correct Answer: C) Communities. 48. What is carrying capacity A) A measure of how dense a population is. B) The amount of biomass a specific biome requires to become stable after a natural disaster. C) Any resource that can run out in an area. D) The maximum number of organisms that can be supported in a given habitat. Show Answer Correct Answer: D) The maximum number of organisms that can be supported in a given habitat. 49. What is the amount of water in the seas? A) 96 percent. B) 99 percent. C) 97 percent. D) 75 percent. Show Answer Correct Answer: C) 97 percent. 50. The largest number of individuals of a particular species that an ecosystem can support over time. A) Population. B) Limiting factor. C) Habitat. D) Carrying capacity. Show Answer Correct Answer: D) Carrying capacity. 51. Producers are also called ..... A) Consumers. B) Otrophs. Show Answer Correct Answer: B) Otrophs. 52. A relationship where one organism hunts and kills another organism is called ..... A) All of the above. B) None of the above. C) Consumer. D) Predator/prey. Show Answer Correct Answer: D) Predator/prey. 53. How did the river landscape change 1950-1990? A) Rivers had strong edges, low erosion, and high flow. B) Rivers had weak edges, high erosion, and low flow. Show Answer Correct Answer: B) Rivers had weak edges, high erosion, and low flow. 54. What are three ways water gets into the air? Evaporation, transpiration, and ..... ? A) Crying. B) Breathing. C) Perspiration. D) Toilets. Show Answer Correct Answer: B) Breathing. 55. The physical environment in which a species lives and to which it is adapted is its A) Niche. B) Biome. C) Habitat. D) None of above. Show Answer Correct Answer: C) Habitat. 56. Which of these describes a mutually beneficial relationship between two organisms? A) A dog with worms in its intestine. B) A turtle and a snail that both eat grass live in a river. C) A honeybee pollinating a plant and receiving nectar for food. D) A small fish attached to a shark, eating tiny pieces of the shark's food as it floats. Show Answer Correct Answer: C) A honeybee pollinating a plant and receiving nectar for food. 57. Where will you see rats, snakes, lizards and many types of cactus? A) Desert. B) Grassland. C) Tundra. D) Tropical rainforest. Show Answer Correct Answer: A) Desert. 58. If there are more birds than there are worms to eat in an area, there will probably be a fight for food. This is an example of what kind of symbiotic relationship? A) Mutualism. B) Competition. C) Parasitism. D) Commensalism. Show Answer Correct Answer: B) Competition. 59. A pyramid of numbers is used to show A) A network of feeding relationships. B) A chain of feeding relationships. C) The distribution of biomass in an ecosystem. D) The distribution of organisms in an ecosystem. Show Answer Correct Answer: D) The distribution of organisms in an ecosystem. 60. Type of consumer that breaks down carbon compounds in dead organisms and organic waste and enriches soil. A) Omnivore. B) Carnivore. C) Herbivore. D) Decoposer. Show Answer Correct Answer: D) Decoposer. ← 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