This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 75 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 75 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A scorpion is a decomposer that is most likely found in the ..... A) Grasslands. B) Rainforest. C) Deciduous forest. D) Taiga. Show Answer Correct Answer: B) Rainforest. 2. What type of relationship is this:The cattle egretfollows herds ofcattle eating theinsects stirred up bythe cattle. A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: B) Commensalism. 3. Biodiversity, aka biological diversity, usually refers to A) The number of plant species in a given area. B) The same species in a general location. C) The number of different species in a given area. D) The number of animal species in a given area. Show Answer Correct Answer: C) The number of different species in a given area. 4. Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales. What kind of relationship is this? A) Mutualism. B) Parasitism. C) Commensalism. D) None of above. Show Answer Correct Answer: C) Commensalism. 5. What does abiotic mean? A) Living. B) Non-living. C) Man made. D) None of above. Show Answer Correct Answer: B) Non-living. 6. Plants make their own food from the sun through photosynthesis, hence they are called producers or A) Heterotroph. B) Autotrophs. C) Consumers. D) Carnivores. Show Answer Correct Answer: B) Autotrophs. 7. The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following? A) Allows more sunlight to be available to algae. B) Inhibits the spread of pathogens in algae colonies. C) Reduces the number of organisms that feed on algae. D) Increases the competition between different algae species. Show Answer Correct Answer: C) Reduces the number of organisms that feed on algae. 8. As you move up the trophic levels of the ecological pyramid, what happens to energy? A) It decreases. B) In increases. Show Answer Correct Answer: A) It decreases. 9. The study of how organisms and non-living things interact in an environment is called A) Heredity. B) History. C) Ecology. D) Genealogy. Show Answer Correct Answer: C) Ecology. 10. When 2 organisms work together for a common goal A) Cooperation. B) Competition. C) Prey. D) Predation. Show Answer Correct Answer: A) Cooperation. 11. Place the levels of environment in the correct order from smallest to largest A) Organismecosystembiospherepopulationcommunitybiome. B) Biospherebiomepopulationorganismecosystemcommunity. C) Organismpopulationcommunity ecosystembiomebiosphere. D) Populationcommunityecosystembiosphereorganismbiome. Show Answer Correct Answer: C) Organismpopulationcommunity ecosystembiomebiosphere. 12. What is the most important factor for an ecosystem to be sustainable and healthy? A) Biodiversity. B) The temperature. C) Abiotic factors. D) The amount of water available. Show Answer Correct Answer: A) Biodiversity. 13. What does ecological footprint measure? A) The size of cities across the world. B) The shoe size of the average human. C) How quantity of natural resources humans need compared to the earth's capacity to provide those resources. D) The amount of fossil fuels that are burned for energy. Show Answer Correct Answer: C) How quantity of natural resources humans need compared to the earth's capacity to provide those resources. 14. Study of how things interact with each other and their enviroment A) Symbiosis. B) Ecology. Show Answer Correct Answer: B) Ecology. 15. Anything that can restrict the size of a population including living and nonliving features, such as predators or drought. A) Limiting factors. B) Population. C) Carrying capacity. D) Community. Show Answer Correct Answer: A) Limiting factors. 16. All frozen water on Earth is ..... A) Hydrosphere. B) Geosphere. C) Atmosphere. D) Cryosphere. Show Answer Correct Answer: D) Cryosphere. 17. During a long period when there is no rainfall, a mountain lion may temporarily leave its usual hunting territory to drink from a farm pond. This behavior is probably due to A) Its need to find different foods to eat. B) A change in a biotic factor. C) A change in an abiotic factor. D) Its need to find a new habitat. Show Answer Correct Answer: C) A change in an abiotic factor. 18. Which type of biome occurs at high latitudes and high altitudes? A) Savanna. B) Taiga. C) Chaparral. D) Tundra. Show Answer Correct Answer: D) Tundra. 19. What aquatic biome is characterized by flowing fresh water? A) Lakes/Ponds. B) Coral Reefs. C) Mangroves Swamps. D) Rivers/Streams. Show Answer Correct Answer: D) Rivers/Streams. 20. The variation in the lengths of some fish is called A) Discontinuous. B) Continuous. C) Both discontinuous and discontinuous. D) Neither discontinuous nor continuous. Show Answer Correct Answer: B) Continuous. 21. Why shouldn't you shout at the forest? A) Because you can scare animals. B) Because you can chore your throat. C) Because you can have a headache. D) Because trees will fall. Show Answer Correct Answer: A) Because you can scare animals. 22. How many percent does light taken in by plants for photosynthesis? A) 2 %. B) 5%. C) 10%. D) 1%. Show Answer Correct Answer: D) 1%. 23. Carbon Dioxide=CO2 A) 1 Carbon, 2 Oxygen. B) 1 Chlorine, 2 Oxygen. C) 1 Chlorophyll, 2 Oxygen. D) None of above. Show Answer Correct Answer: A) 1 Carbon, 2 Oxygen. 24. Biotic factors in the environment are A) Living or once living. B) Mines. C) Non-living. D) Metal. Show Answer Correct Answer: A) Living or once living. 25. Temperature refers to the conditions of the atmosphere from day to day. A) False. B) True. Show Answer Correct Answer: A) False. 26. All living things together in one area is called a ..... A) Community. B) Population. C) Ecosystem. D) None of above. Show Answer Correct Answer: A) Community. 27. The symbiotic relationship in which one species benefits, while the other is unaffected is known as: A) Mutualism. B) Commensalism. C) Parasitism. D) Symbiosis. Show Answer Correct Answer: B) Commensalism. 28. What is the secondary consumer? Plant $\rightarrow$ snail $\rightarrow$ frog $\rightarrow$ snake $\rightarrow$ owl A) Snake. B) Snail. C) Frog. D) Owl. Show Answer Correct Answer: C) Frog. 29. True or False. In this Food Web Pyramid the consumers on each level only get about 10 percent of energy that the plants have stored. A) False. B) True. Show Answer Correct Answer: B) True. 30. Primary succession refers to ..... A) A pioneer species establishing an ecosystem after a forest fire. B) An organism gaining dominance over another for the first time. C) Establishing an environment after a catastrophic event. D) Establishing an environment for the first time. Show Answer Correct Answer: D) Establishing an environment for the first time. 31. What is the study of the interactions among organisms and between organisms and their environments called? A) Astronomy. B) Biosphere. C) Biology. D) Ecology. Show Answer Correct Answer: D) Ecology. 32. What do plants use to take in carbon dioxide? A) Chloroplasts. B) Small openings in their leaves called stomata. C) Their roots. D) Their stem. Show Answer Correct Answer: B) Small openings in their leaves called stomata. 33. What is the characteristic shape of a curve illustrating logistic growth? A) S-shaped. B) J-shaped. C) L-shaped. D) U-shaped. Show Answer Correct Answer: A) S-shaped. 34. What would most likely happen to the population of the water flea if the algae it ate decreased? A) It would decrease. B) It would not change. C) It would first increase then decrease. D) It would increase. Show Answer Correct Answer: A) It would decrease. 35. Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the trees and the kudzu growing on them? A) Competition. B) Mutualism. C) Parasitism. D) Predator-prey. Show Answer Correct Answer: A) Competition. 36. Knowing the type of food consumed by an organism helps to identify the role of the organism in the community. This role is known as its A) Biomass. B) Nesting site. C) Territorial range. D) Niche. Show Answer Correct Answer: D) Niche. 37. Which would have barnacles, seaweed, and starfish? A) Coastal ocean. B) Intertidal ocean. C) Open ocean. D) None of above. Show Answer Correct Answer: B) Intertidal ocean. 38. First source of energy for a food web is ..... ? A) Water. B) Soil. C) Food. D) Sun. Show Answer Correct Answer: D) Sun. 39. This is the energy that moves objects. A) Mechanical. B) Cool. C) Chemical. D) Nuclear. Show Answer Correct Answer: A) Mechanical. 40. What does a Secondary Consumer eat? A) Secondary Consumers. B) Primary Consumers. C) Producers. D) Tertiary Consumers. Show Answer Correct Answer: B) Primary Consumers. 41. Which best explains why runoff is important? A) It returns water to other locations on Earth. B) It increases the chance of flooding. C) It makes evaporation occur faster. D) It increases condensation. Show Answer Correct Answer: A) It returns water to other locations on Earth. 42. The arrow in a food web shows ..... A) Which organism is eating who. B) The sunlight. C) The flow of energy from organism to organism. D) Which organism is dying. Show Answer Correct Answer: C) The flow of energy from organism to organism. 43. As buffalos walk through grass, insects become active and are seen and eaten by cowbirds. This neither harms nor benefits the buffalo. A) Commensalism. B) Parasitism. C) Mutualism. D) None of above. Show Answer Correct Answer: A) Commensalism. 44. Choose the right meaning:tin A) Tin. B) Trash can. C) Bottle. D) None of above. Show Answer Correct Answer: A) Tin. 45. Biotic means ..... A) Nonliving. B) Living. Show Answer Correct Answer: B) Living. 46. Why is the sun's energy necessary for the water cycle? A) It is the heat source that turns water into vapor. B) It is the light source that turns water into vapor. C) It is the source that turns vapor into water droplets. D) None of above. Show Answer Correct Answer: A) It is the heat source that turns water into vapor. 47. A desert, rain forest, tundra and grassland are all different kinds of: A) Biosphere. B) Community. C) Biomes. D) Ecosystem. Show Answer Correct Answer: C) Biomes. 48. Which of the following is a herbivore? A) Human. B) Cat. C) Horse. D) Vulture. Show Answer Correct Answer: C) Horse. 49. All of the populations that live in one area together A) Populations. B) Limiting factors. C) Speed limit. D) Community. Show Answer Correct Answer: D) Community. 50. First species in an area, have always been there. A) Lichen. B) Invasive species. C) Native species. D) Old people. Show Answer Correct Answer: C) Native species. 51. Which method of determining population size involves counting the organisms in a smaller area and multiplying it by the entire area? A) Direct observation. B) Indirect observation. C) Sampling. D) Mark and recapture. Show Answer Correct Answer: C) Sampling. 52. Any single living thing within an ecosystem A) Population. B) Community. C) Organism. D) Biosphere. Show Answer Correct Answer: C) Organism. 53. ..... need sunlight, water, and nutrient to live. A) Plants. B) Animals. C) Bacteria. D) None of above. Show Answer Correct Answer: A) Plants. 54. All wildfires are harmful. A) True. B) False. Show Answer Correct Answer: B) False. 55. One way a population can decrease is if there is an increase in the A) Birth rate. B) Death rate. C) Immigration. D) None of above. Show Answer Correct Answer: B) Death rate. 56. All living and nonliving things in an environment and the many ways they interact are called ..... A) Community. B) Ecosystem. Show Answer Correct Answer: B) Ecosystem. 57. When an organisms' prey decreases, what most likely will happen? A) The number of prey will increase. B) The number of predators will also decrease. C) The number of predators will increase. D) The prey gets sick. Show Answer Correct Answer: B) The number of predators will also decrease. 58. Which of the following is a predator and prey relationship? A) Cow and grass. B) Vulture and a dead lion. C) Tick and a deer. D) Spider and a fly. Show Answer Correct Answer: D) Spider and a fly. 59. Which model shows the number of organisms at each trophic level in an ecosystem? A) Food web. B) Pyramid of numbers. C) Food chain. D) Biomass pyramid. Show Answer Correct Answer: B) Pyramid of numbers. 60. A group of the same species living together in one area is a what? A) Ecosystem. B) Biome. C) Community. D) Population. Show Answer Correct Answer: D) Population. ← 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