This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 66 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 66 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Dirty water, polluting rivers. A) We're sorry. B) Serviceage. C) I'm sorry. D) Sewage. Show Answer Correct Answer: D) Sewage. 2. A factor that determines whether a population thrives or declines is called A) Carrying capacity. B) Factors. C) Limiting factors. D) None of above. Show Answer Correct Answer: C) Limiting factors. 3. The most important factor in converting nitrogen into usable forms during the nitrogen cycle is ..... A) Plants. B) Animals. C) Decomposers. D) Bacteria. Show Answer Correct Answer: D) Bacteria. 4. A relationship where both organisms benefit is called ..... A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: A) Mutualism. 5. Food web and Food chain are the same thing A) False. B) True. Show Answer Correct Answer: A) False. 6. Eats BOTH producers (plants) and consumers (other animals) A) Omnivore. B) Carnivore. C) Herbivore. D) None of above. Show Answer Correct Answer: A) Omnivore. 7. Bird & Tree:A bird builds a nest in a hole in the trunk of the tree. It is protected from the rain and predators. The tree is not harmed or helped by the bird. A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: B) Commensalism. 8. Plankton that make food by photosynthesis are called what? A) Phytoplankton. B) Krill. C) Plankton. D) Zooplankton. Show Answer Correct Answer: A) Phytoplankton. 9. Most common greenhouse gases are A) Sulphur. B) Oxygen. C) Carbon dioxide. D) Nitrogen. Show Answer Correct Answer: C) Carbon dioxide. 10. Global warming has been linked to a decrease in A) The temperature of Earth. B) The size of the polar ice caps. C) The rate of carbon dioxide production. D) The rate of species extinction. Show Answer Correct Answer: B) The size of the polar ice caps. 11. Coniferous (Boreal) forests are made up primarily of trees that ..... A) Change color in the fall. B) Bear cones. C) Shed their leaves. D) Have thin bark. Show Answer Correct Answer: B) Bear cones. 12. Who is considered as the pioneer in ecological succession A) Eugene P Odum. B) Eugene Warming. C) Henry Cowles. D) Charles Elton. Show Answer Correct Answer: C) Henry Cowles. 13. Organisms that can make glucose during photosynthesis are called ..... A) Producers. B) Scavengers. C) Carnivores. D) Consumers. Show Answer Correct Answer: A) Producers. 14. An organism that eats only plant is called an ..... A) Vegetarian. B) Carnivore. C) Omnivore. D) Herbivore. Show Answer Correct Answer: D) Herbivore. 15. A new species of animal that can tolerate drought has been found. These animals graze in herds and like grasses with high silica content. Which biome does this animal MOST LIKELY inhabit? A) Taiga. B) Savanna. C) Temperate deciduous forest. D) Desert. Show Answer Correct Answer: B) Savanna. 16. What does not produce carbon dioxide? A) Animal respiration. B) Plants decaying. C) Burning Fossil Fuels. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 17. Mia, Abigail, and Grace went to a zoo. They saw a lion that was being fed. If the lion only eats meat, what type of organism would it be considered? A) Omnivore. B) Carnivore. C) Vegan. D) Herbivore. Show Answer Correct Answer: B) Carnivore. 18. This is where an organism lives A) Niche. B) Biosphere. C) Heterotrophs. D) Habitat. Show Answer Correct Answer: D) Habitat. 19. An S-shaped curve is known as A) Logistic Graph. B) Exponential graph. C) Survivorship curves. D) Graphs. Show Answer Correct Answer: A) Logistic Graph. 20. Which is a MAJOR cause of acid rain? A) Dumping sewage in rivers. B) Burning fossil fuels for energy. C) Using Nuclear power stations. D) Spraying pesticides on crops. Show Answer Correct Answer: B) Burning fossil fuels for energy. 21. Which of the following is biotic interacting with abiotic factors? A) A rock rolls off a cliff. B) A cow eats grass. C) The sun heats up the inside of a car. D) Human builds a house with stone. Show Answer Correct Answer: D) Human builds a house with stone. 22. Which of the following organisms recycle materials from dead organisms and their waste products? A) Autotrophs. B) Decomposers. C) Heterotrophs. D) Scavengers. Show Answer Correct Answer: B) Decomposers. 23. An organism that hunts and eats other organisms A) Prey. B) Camouflage. C) Predator. D) Omnivore SHOW ANSWER. Show Answer Correct Answer: C) Predator. 24. The process of changing nitrogen gas to nitrates A) Groundwater. B) Nitrogen fixation. Show Answer Correct Answer: B) Nitrogen fixation. 25. How does habitat fragmentation reduce genetic diversity in species? A) Habitat fragmentation makes nonnative species introduction possible. B) Habitat fragmentation opens migration routes. C) Habitat fragmentation isolates a large population into smaller groups. D) Habitat fragementation encourages open gene flow. Show Answer Correct Answer: C) Habitat fragmentation isolates a large population into smaller groups. 26. Although Keystone Species can cause a significant change to the ecosystem's population, ..... populations must always be in the greatest quantity for ecosystem health. A) Producers. B) Primary consumers. C) Tertiary consumers. D) Secondary consumers. Show Answer Correct Answer: A) Producers. 27. The prey population distribution is limited by A) Too many prey. B) Predator removal. C) Hours of sunlight. D) The type of food. Show Answer Correct Answer: B) Predator removal. 28. What type of consumer eats plants? A) Carnivore. B) Parasite. C) Herbivore. D) Omnivore. Show Answer Correct Answer: C) Herbivore. 29. Which is an abiotic factor that would affect the ability of a species of tree to survive in a particular habitat? A) Type and number of rabbits present. B) Climax vegetation of the area. C) Availability of minerals in the soil. D) Type and number of tree parasites present. Show Answer Correct Answer: C) Availability of minerals in the soil. 30. A relationship between organisms. A) Symbiosis. B) Competition. C) Predation. D) None of above. Show Answer Correct Answer: A) Symbiosis. 31. What is the term for the normal environment in which an animal or plant lives? A) Ecology. B) Habitat. C) Ecosystem. D) Biodiversity. Show Answer Correct Answer: B) Habitat. 32. A symbiotic relationship that involves species having to fight for something they both need or want A) Parasitism. B) Commensalism. C) Competition. D) Predation. Show Answer Correct Answer: C) Competition. 33. A living thing that needs to eat other living things for food: A) Consumer. B) Producer. C) Desk chair. D) None of above. Show Answer Correct Answer: A) Consumer. 34. A resource or condition that limits the growth or population within an ecosystem A) Limiting Factor. B) Biodiversity. C) Carrying Capacity. D) Sustainable. Show Answer Correct Answer: A) Limiting Factor. 35. As a society, we tend to buy: A) Cheap materials that we will throw away rather than repair. B) Durable materials that we will repair and maintain rather than throw away. C) Materials that are sustainably produced. D) None of above. Show Answer Correct Answer: A) Cheap materials that we will throw away rather than repair. 36. When carbon dioxide dissolves from the air into the ocean-the interaction is between ..... A) The atmosphere and geosphere. B) The atmosphere and hydrosphere. C) The atmosphere and biosphere. D) The atmosphere and atmosphere. Show Answer Correct Answer: B) The atmosphere and hydrosphere. 37. An underground layer of rock that stores water is called a(n) A) Swamp. B) Aquifer. C) Fen. D) Spring. Show Answer Correct Answer: B) Aquifer. 38. Which of these describes a species that has become extinct? A) Fewer members of the species are dying than being born. B) More members of the species are dying than being born. C) Very few members of a species are alive. D) All members of a species have died. Show Answer Correct Answer: D) All members of a species have died. 39. Which of the following represents an economic benefit of invasive lionfish in the Gulf of Mexico? A) Decrease in the health of reef habitats as lionfish prey on native species. B) Increase in injuries to divers trying to get underwater selfies with lionfish. C) Decrease in fishing income as the lionfish outcompete native fishes. D) Increase in tourism dollars from those wanting to eat lionfish dishes in local restaurants. Show Answer Correct Answer: D) Increase in tourism dollars from those wanting to eat lionfish dishes in local restaurants. 40. Species that has died out and no individuals are left A) Extinction. B) Endangered Species. Show Answer Correct Answer: A) Extinction. 41. All fungi are multicellular. A) True. B) False. Show Answer Correct Answer: B) False. 42. Nonmetals do NOT have which of the following characteristics: A) Non-conductor. B) Shiny. C) Non-reactive with HCl/CuCl2. D) Brittle. Show Answer Correct Answer: B) Shiny. 43. Together, all the ecosystems on Earth form ..... A) A community. B) A biosphere. C) A biome. D) An Earthsphere. Show Answer Correct Answer: B) A biosphere. 44. There are 3 roles an organism can play in an ecosystem are: A) Producer, consumer, decomposer. B) Producer, director, actor. C) Predator, prey, scavenger. D) Herbivore, carnivore, omnivore. Show Answer Correct Answer: A) Producer, consumer, decomposer. 45. Most animals have ..... for food, water, and living space. A) Commensalism. B) Competition. C) Fun. D) Predation. Show Answer Correct Answer: B) Competition. 46. The grasses at the beginning of this food chain are the A) Producers. B) Apex predators. C) Consumers. D) Decomposers. Show Answer Correct Answer: A) Producers. 47. In an ecosystem, which one of the following types of entities occupies more than one trophic level? A) Fish. B) Zooplankton. C) Phytoplankton. D) Frog. Show Answer Correct Answer: A) Fish. 48. Which one is another name for a consumer? A) Sun. B) Autotroph. C) Homologous. D) Heterotroph. Show Answer Correct Answer: D) Heterotroph. 49. Which of the following includes a community of living things interacting with the nonliving parts of their environment? A) Ecosystem. B) Individual. C) Community. D) Population. Show Answer Correct Answer: A) Ecosystem. 50. Measurement of population per unit area or unit volume A) Size. B) Density. C) Dispersion. D) None of above. Show Answer Correct Answer: B) Density. 51. The chemical elements and water that are needed by organisms continuously recycle in ecosystems. They pass through biotic and abiotic components of the biosphere. A) Exchange pool. B) Biogeochemical cycle?. Show Answer Correct Answer: B) Biogeochemical cycle?. 52. A community interacting with their abiotic factors A) Community. B) Population. C) Ecosystem. D) Organism. Show Answer Correct Answer: C) Ecosystem. 53. Consumers that eat both plants and animals are called A) Herbivore. B) Carnivore. C) Producer. D) Omnivore. Show Answer Correct Answer: D) Omnivore. 54. What are spieces A) A squirrel. B) To habitat. C) One type of organism. D) Multiple people. Show Answer Correct Answer: C) One type of organism. 55. When a flea is living on a dog, the flea is the: A) Host. B) Prey. C) Predator/Parasite. D) None of above. Show Answer Correct Answer: C) Predator/Parasite. 56. Which of the following types of succession would most likely occur after a forest fire? A) Primary Succession. B) Old field succession. C) Climax Succession. D) Secondary Succession. Show Answer Correct Answer: D) Secondary Succession. 57. ..... break down dead plants and animals. A) Producers. B) Consumers. C) Decomposers. D) None of above. Show Answer Correct Answer: C) Decomposers. 58. Arjun, Olivia, and Isla went on a field trip to a forest. They observed various elements in the forest. According to you, what did they observe that can be classified as biotic factors? A) Animals they saw like deer and birds. B) All the living things they saw in the ecosystem, like plants, animals, and insects. C) The sunlight filtering through the trees. D) The plants they saw like trees and ferns. Show Answer Correct Answer: B) All the living things they saw in the ecosystem, like plants, animals, and insects. 59. The zone that receives the highest amount of sunlight is the: A) Aphotic Zone. B) Twilight Zone. C) Benthic Zone. D) Photic Zone. Show Answer Correct Answer: D) Photic Zone. 60. Which biome is very warm with large amounts of rainfall but can go through dry spells? A) Temperate deciduous rainforest. B) Tropical rainforest. C) Coniferous rainforest. D) Grasslands. Show Answer Correct Answer: B) Tropical rainforest. ← 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