This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 24 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Another name for consumer that means to consume other organisms A) Producer. B) Prey. C) Heterotroph. D) Autotroph. Show Answer Correct Answer: C) Heterotroph. 2. Toxins accumulate in the tissues of organisms as they pass through a food chain/web. A) Biomagnification. B) Symbiosis. C) Ecological succession. D) Eutrophication. Show Answer Correct Answer: A) Biomagnification. 3. A tick and a dog have this type of relationship. A) Commensalism. B) Mutualism. C) Parasitism. D) Neutralism. Show Answer Correct Answer: C) Parasitism. 4. Two animals living together in a close relationship A) Producers. B) Consumers. C) Predator/prey. D) Symbiosis. Show Answer Correct Answer: D) Symbiosis. 5. If the amount of predators decreases, the amount of prey animals will ..... A) Increase. B) Decrease. Show Answer Correct Answer: A) Increase. 6. What is the main function of cellular respiration? A) To get rid of ATP. B) To prevent ATP. C) To create ATP. D) None of above. Show Answer Correct Answer: C) To create ATP. 7. In a food web, which organism should have arrows pointing to it from all organisms in the food web A) Lion-apex predator. B) Plant-producer. C) Bacteria-decomposer. D) None of above. Show Answer Correct Answer: C) Bacteria-decomposer. 8. All the different populations that live together in an area is called a A) Ecosystem. B) Biosphere. C) Community. D) Biome. Show Answer Correct Answer: A) Ecosystem. 9. A chimpanzee eats fruits, nuts, leaves, and small mammals. What kind of organism is a chimpanzee? A) Carnivore. B) Omnivore. C) Decoposer. D) Producer. Show Answer Correct Answer: B) Omnivore. 10. Choose the correct sequence for energy flow within an ecosystem A) Carnivores $\rightarrow$ scavengers $\rightarrow$ herbivores $\rightarrow$ producers. B) Herbivores $\rightarrow$ producers $\rightarrow$ carnivores $\rightarrow$ scavengers. C) Producers $\rightarrow$ herbivores $\rightarrow$ carnivores $\rightarrow$ scavengers. D) Producers $\rightarrow$ carnivores $\rightarrow$ herbivores $\rightarrow$ scavengers. Show Answer Correct Answer: C) Producers $\rightarrow$ herbivores $\rightarrow$ carnivores $\rightarrow$ scavengers. 11. Chemical laboratory A) Chemistry laboratory. B) Chemical reaction. C) Chemical nomenclature. D) Chemical analysis. Show Answer Correct Answer: A) Chemistry laboratory. 12. An energy pyramid gets smaller at the top because: A) It takes more plants to feed a rabbit than it does to feed a bear. B) The amount of energy decreases as you move up the food chain. C) There are more consumers than producers. D) No energy is lost as you move up the food chain. Show Answer Correct Answer: B) The amount of energy decreases as you move up the food chain. 13. Living parts of an ecosystem are called ..... Examples include plants, animals, fungi, bacteria, and protists like algae. A) Biotic factors. B) Abiotic factors. C) Crazy critters. D) Animals and plants. Show Answer Correct Answer: A) Biotic factors. 14. A biome is defined by its A) Elevation and soil. B) Plant and animal species. C) Latitude and longitude. D) Climate and plant life. Show Answer Correct Answer: D) Climate and plant life. 15. Acid rain has a pH LESS than A) 3. B) 8. C) 7. D) 6. Show Answer Correct Answer: D) 6. 16. How do animals contribute to the amount of atmospheric carbon? A) Not at all. B) Photosynthesis. C) Respiration. D) None of above. Show Answer Correct Answer: C) Respiration. 17. What is the relationship between two variables? A) Positive correlation. B) Negative correlation. C) No correlation. D) None. Show Answer Correct Answer: B) Negative correlation. 18. Place the levels of environment in the correct order. A) Organism, population, community, ecosystem, biome, biosphere. B) Biome, biosphere, population, organism, ecosystem, community. C) Population, community, organism, biome, ecosystem, biosphere. D) Organism, ecosystem, biosphere, population, community, biome. Show Answer Correct Answer: A) Organism, population, community, ecosystem, biome, biosphere. 19. A relationship where one organism benefits and one organism is unaffected is called ..... A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: B) Commensalism. 20. What is an increase of biodiversity over time, after a natural or manmade disturbance? A) Ecological recession. B) Climax recession. C) Climax succession. D) Ecological succession. Show Answer Correct Answer: D) Ecological succession. 21. Water evaporating from the surface of a lake moves from the ..... A) Geosphere to the hydrosphere. B) Atmosphere to the geosphere. C) Hydrosphere to the atmosphere. D) Atmosphere to the hydrosphere. Show Answer Correct Answer: C) Hydrosphere to the atmosphere. 22. Semiconductors are ..... A) Metal. B) Nonmetal. C) Metalloids. D) None of above. Show Answer Correct Answer: C) Metalloids. 23. It is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. A) Habitat. B) Ecology. C) Biome. D) Ecosystem. Show Answer Correct Answer: D) Ecosystem. 24. What is the difference between primary and secondary consumers in a food chain? A) Primary consumers eat producers, secondary consumers eat primary consumers. B) Primary consumers eat secondary consumers, secondary consumers eat producers. C) Primary consumers and secondary consumers eat the same organisms. D) There is no difference between primary and secondary consumers. Show Answer Correct Answer: A) Primary consumers eat producers, secondary consumers eat primary consumers. 25. Nitrogen fixation is A) The process of converting nitrogen gas into enegy. B) The process of converting nitrogen gas into ammonia. C) The process of conveting nitrogen gas into water. D) The process of converting nitrogen gas into a solid. Show Answer Correct Answer: B) The process of converting nitrogen gas into ammonia. 26. Which of the following examples shows the indirect value of biodiversity conservation? A) Enjoying recreational activities in natural environments. B) Generating an income for the guides of nature tours. C) Obtaining medicinal products from plants. D) Obtaining lumber from forest trees. Show Answer Correct Answer: A) Enjoying recreational activities in natural environments. 27. An aquarist takes half of the fish out of a tank, and the remaining fish grow larger and are healthier. Which factor was most likely affecting the fish? A) Water. B) Food. C) Shelter. D) Space. Show Answer Correct Answer: D) Space. 28. Why are there fewer organisms in each level as you go up the energy pyramid? A) There is more energy available at higher levels. B) Higher levels have more mean animals. C) There is less energy availabe at higher levels. D) Coyotes get hungrier. Show Answer Correct Answer: C) There is less energy availabe at higher levels. 29. Which nitrogen cycle process breaks down atmospheric nitrogen (N2) and combines it with hydrogen or oxygen using bacteria or lightning strikes A) Ammonification. B) Denitrification. C) Nitrification. D) Nitrogen fixation. Show Answer Correct Answer: D) Nitrogen fixation. 30. Which of these is most likely to happen in an ecosystem if all of the primary consumers are removed from an ecosystem? A) Other primary consumers will take their places. B) Secondary consumers will decrease in numbers. C) Producers will decrease in numbers. D) None of above. Show Answer Correct Answer: B) Secondary consumers will decrease in numbers. 31. What role do decomposers play in the carbon cycle? A) Combustion. B) Absorb carbon dioxide. C) Release carbon dioxide into atmosphere. D) Release carbon into the soil. Show Answer Correct Answer: D) Release carbon into the soil. 32. When too much SO2 and NO2 are released into the atmosphere, this will result A) Soil erosion. B) Nutrient rain. C) Acid rain. D) Fewer clouds. Show Answer Correct Answer: C) Acid rain. 33. Several owls live in a forest. The owls prey on mice. Hawks also prey on mice. Which might happen if several hawks move to the forest where the owls live? A) The number of owls will increase, and the number of hawks will decrease. B) The number of mice will increase, and the number of owls will decrease. C) The number of owls and hawks will increase. D) The number of owls and mice will decrease. Show Answer Correct Answer: D) The number of owls and mice will decrease. 34. What growth pattern describes a population whose growth rate slows or stops following a period of exponential growth? A) Predator-prey cycle. B) Logistic growth. C) Exponential growth. D) Population growth. Show Answer Correct Answer: B) Logistic growth. 35. In an ecosystem, living things are called ..... and non-living things are called ..... A) Herbivores, decomposers. B) Abiotic, biotic. C) Biotic, abiotic. D) Organisms, decomposers. Show Answer Correct Answer: C) Biotic, abiotic. 36. The lowest level of organization is called: A) Community. B) Organism. C) Biosphere. D) None of above. Show Answer Correct Answer: B) Organism. 37. All of the biotic and abiotic factors. A) Community. B) Ecosystem. C) Population. D) None of above. Show Answer Correct Answer: B) Ecosystem. 38. A species that still needs to be protected but is not an immediate danger of becoming extinct. A) Endangered species. B) Evolutionary species. C) Biological species. D) Threatened species. Show Answer Correct Answer: D) Threatened species. 39. Organisms that need to consume food from another source A) Consumers. B) Producers. Show Answer Correct Answer: A) Consumers. 40. How nitrogen is "fixed" into a useable form for plants ..... A) Through photosynthesis. B) Through action of bacteria & lightning. C) Through action of bacteria only. D) Through lightning only. Show Answer Correct Answer: B) Through action of bacteria & lightning. 41. These organisms break down the remains of dead organisms and return their nutrients to the environment A) Scavenger. B) Carnivore. C) Decoposer. D) Animal. Show Answer Correct Answer: C) Decoposer. 42. In which year was the term biocenosis introduced? A) 1935. B) 1940. C) 1877. D) 1869. E) 2000. Show Answer Correct Answer: C) 1877. 43. What is a trophic level? A) Feeding position in a food chain or food web, such as producer, primary consumer, or secondary consumer. B) The decrease in biomass from lower to higher levels. Show Answer Correct Answer: A) Feeding position in a food chain or food web, such as producer, primary consumer, or secondary consumer. 44. The rainforest has the greatest variety of different organisms that live there. In other words, the rainforest has the greatest ..... A) Biodiversity. B) Succession. C) Speciation. D) Climate. Show Answer Correct Answer: A) Biodiversity. 45. An animal that is hunted and eaten by other animals is called ..... A) Prey. B) Predator. C) Producer. D) None of above. Show Answer Correct Answer: A) Prey. 46. A population that is growing exponentially in the absence of limiting factors can be illustrated by a (n) ..... A) J-shaped curve. B) Curve that terminates a plateau phase. C) S-shaped curve. D) Tolerance curve. Show Answer Correct Answer: A) J-shaped curve. 47. The organism that is harmed in parasitism is called the: A) Prey. B) Parasite. C) Predator. D) Host. Show Answer Correct Answer: D) Host. 48. Which best describes the relationship between climate and biodiversity? A) As climate determines the animals in an ecosystem, it directly influences the biodiversity of a biome. B) As climate determines the plants in an ecosystem, it also influences the biodiversity of a biome. Show Answer Correct Answer: B) As climate determines the plants in an ecosystem, it also influences the biodiversity of a biome. 49. A group of populations that interact in an area is ..... A) Population. B) Ecosystem. C) Community. D) Biome. Show Answer Correct Answer: C) Community. 50. We can ..... paper, tins, and bottles A) Plant. B) Hurt. C) Go. D) Recycle. Show Answer Correct Answer: D) Recycle. 51. What is it called when one organism consumes another organism for food? A) Symbiosis. B) Predation. C) Competition. D) Niche. Show Answer Correct Answer: B) Predation. 52. This helps plants maintain shape, storage, digestion and waste. This organelle can become very enlarged when plants store water. A) Lysosome. B) Golgi Apparatus. C) Cell membrane. D) Vacuoles. Show Answer Correct Answer: D) Vacuoles. 53. Who discovered Ecology A) Dr Vazquez. B) Ernst Haeckel. C) George Alabama. D) Mr Swinfield. Show Answer Correct Answer: B) Ernst Haeckel. 54. Which of the following biomes does North Carolina fall into? A) Desert. B) Forest. C) Grasslands. D) Aquatic. Show Answer Correct Answer: B) Forest. 55. Sustainability is making sure that the planet and its resources can continue to provide life. A) False. B) True. Show Answer Correct Answer: B) True. 56. A raccoon will eat both plants and animals. This means it is a(n) ..... A) Producer. B) Fleshier. C) Omnivore. D) Herbivore. Show Answer Correct Answer: C) Omnivore. 57. Both organisms benefit A) Mutualism. B) Photosynthesis. C) Commensalism. D) Parasitism. Show Answer Correct Answer: A) Mutualism. 58. If there are 100 KJ of energy available at the secondary consumer level, how many KJ of energy are available at the producer level? A) 1, 000 KJ. B) 10, 000 KJ. C) 1 KJ. D) 10 KJ. Show Answer Correct Answer: B) 10, 000 KJ. 59. Which of the following choices only includes abiotic factors? A) Sunlight, algae, and temperature. B) Fish, crabs, oxygen. C) Sunlight, soil, and oxygen. D) Algae, temperature, and dog. Show Answer Correct Answer: C) Sunlight, soil, and oxygen. 60. At each level of the energy pyramid, only ..... % of the available energy is passed to the next consumer A) 5%. B) 10%. C) 50%. D) 1%. Show Answer Correct Answer: B) 10%. ← 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