This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of these is NOT an environmental issue? A) Over Population. B) Oil Spills. C) Space Exploration. D) Pollution. Show Answer Correct Answer: C) Space Exploration. 2. How much energy is available to be passed on to the next trophic level in an ecosystem? A) 50%. B) 75%. C) 10%. D) 100%. Show Answer Correct Answer: C) 10%. 3. This biome is characterized by the mixing of salt water and freshwater and has animals such as crabs, starfish and belugas whales A) Estuary. B) Coral reef. C) Deep ocean. D) Beach. Show Answer Correct Answer: A) Estuary. 4. What are limiting factors A) An environmental factor that causes animals to die. B) An environmental factor that causes a population to increase. C) An environmental factor that causes a population to decrease. D) An environmental factor that occurs only in mars. Show Answer Correct Answer: C) An environmental factor that causes a population to decrease. 5. ..... ! Listen to the teacher. A) Wait. B) Talk. C) Sing. D) Be quiet!. Show Answer Correct Answer: D) Be quiet!. 6. In the exponential model of population growth, where dN/dt = rN, what is occurring to the population at the following r values?r<0 A) Population is declining. B) Population is growing. C) No population growth. D) None of above. Show Answer Correct Answer: A) Population is declining. 7. Which biome is a treeless biome in the far north with harsh, cold winters and extremely short summers A) Temperate deciduous forest. B) Tropical rain forest. C) Tundra. D) Desert. Show Answer Correct Answer: C) Tundra. 8. Deforestation causes an increase in atmospheric carbon dioxide A) False. B) True. Show Answer Correct Answer: B) True. 9. Biomass increases at the upper levels of a food chain. A) False. B) True. Show Answer Correct Answer: A) False. 10. Deciduous trees ..... their leaves in the fall. A) Shed. B) Increase. C) Grow. D) Restore. Show Answer Correct Answer: A) Shed. 11. Willow trees get their energy from the sun. Willow trees are ..... A) Decomposers. B) Producers. C) Consumers. D) Herbivores. Show Answer Correct Answer: B) Producers. 12. Soil organisms, such as fungi, worms & bacteria are all parts of a woodland ecosystem. What best describes the role of these organisms in the woodland ecosystem? A) To provide oxygen to animals. B) To obtain dissolved oxygen from moisture. C) To break down the remains of other living things. D) To store chlorophyll for photosynthesis. Show Answer Correct Answer: C) To break down the remains of other living things. 13. Why is solar energy not a reliable source of energy? A) The sun is not hot enough. B) The sun does not shine every day or at night. C) The sun might run out. D) The sun is nonrenewable. Show Answer Correct Answer: B) The sun does not shine every day or at night. 14. An endangered species is one that is ..... A) A species that is in danger of going extinct. B) A species that has gone extinct. C) A species that is bred in captivity. D) The most important species in an ecosystem. Show Answer Correct Answer: A) A species that is in danger of going extinct. 15. Why is wind considered abiotic? A) It isn't made by a living organism, it is not living, and never lived. B) It has a mind of its own. C) It can affect the temperature of an area. D) It can damage trees and other parts of the ecosystem. Show Answer Correct Answer: A) It isn't made by a living organism, it is not living, and never lived. 16. How does the temperature of ocean water change as it gets deeper? A) It gets warmer. B) It gets colder. C) It stays the same. D) It gets colder and then warmer. Show Answer Correct Answer: B) It gets colder. 17. Occurs when population slows or stops following a period of exponential growth. A) No growth. B) Exponential growth. C) Population growth. D) Logistic growth. Show Answer Correct Answer: D) Logistic growth. 18. As toxins travel up the food chain, they become more concentrated in higher level consumers. This is known as: A) Parasitism. B) Predation. C) Biomagnification. D) Biodiversity. Show Answer Correct Answer: C) Biomagnification. 19. What is the major source of phosphorus on land? A) Compounds formed from bacterial conversion. B) Deposition from atmospheric phosporus. C) Compounds released from the weathering of rocks. D) Compounds that are formed by autotrophs during photosynthesis. Show Answer Correct Answer: C) Compounds released from the weathering of rocks. 20. Biased sampling is A) When you choose a population that is more likely to give you the result you want. B) When you choose a group that is equally likely to be chosen. Show Answer Correct Answer: A) When you choose a population that is more likely to give you the result you want. 21. A model that shows many different feeding relationships A) Food diagram. B) Food web. C) Web cycle. D) Menu. Show Answer Correct Answer: B) Food web. 22. What factors define aquatic ecosystems? A) Salinity. B) Depth and concentrations of dissolved nutrients. C) Temperature and flow rate. D) All of above. Show Answer Correct Answer: D) All of above. 23. Hey can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions. A) Generalist species. B) Specialist species. Show Answer Correct Answer: A) Generalist species. 24. The loss of a kind of living thing A) Migration. B) Extinction. C) Hibernation. D) Instinct. Show Answer Correct Answer: B) Extinction. 25. Birds eat insects off the skin of cows. If the relationship is a type of mutualism, then the organisms that will benefit are A) Only the cattle. B) Neither the birds or the cattle. C) Both the birds and the cattle. D) Only the birds. Show Answer Correct Answer: C) Both the birds and the cattle. 26. Examples of decomposers include A) Vultures and raccoons. B) Earthworms, dung beetles, and spiders. Show Answer Correct Answer: B) Earthworms, dung beetles, and spiders. 27. Why are there so few aquatic plants & phytoplankton that live at the bottom zones in the ocean? A) The ocean floor contains many decomposers. B) Most sunlight is absorbed before reaching these levels. C) Water is a limiting factor. D) The temperature in these zones is extremely low. Show Answer Correct Answer: B) Most sunlight is absorbed before reaching these levels. 28. Humans are affecting the carbon cycle by A) Burning fossil fuels. B) Destroying vegetation that absorbs carbon dioxide. C) Using electrical labor-saving devices. D) All of the above. Show Answer Correct Answer: D) All of the above. 29. What does Tropic Level 4 Contain? A) Producers. B) Secondary Consumers. C) Primary Consumers. D) Tertiary Consumers. Show Answer Correct Answer: D) Tertiary Consumers. 30. Which of the following is NOT an example of a decomposer A) Insects. B) Bacteria. C) Hawk. D) Fungi. Show Answer Correct Answer: C) Hawk. 31. In addition to energy, organisms need matter to survive. Which of the following is true about matter in the biosphere? A) The total amount of matter decreases overtime. B) The total amount of matter increases overtime. C) Biogeochemical cycles transform and reuse molecules. D) Matter flows through ecosystems in one direction. Show Answer Correct Answer: C) Biogeochemical cycles transform and reuse molecules. 32. The Florida panther once occupied areas from Florida to Louisiana. It now lives only in the southwestern tip of Florida. What is the most likely cause of the decline of the Florida panther population? A) The weakening of species due to inbreeding. B) Competition for territory between panthers. C) The increase in the population of white-tailed deer. D) The loss of natural habitat due to human settlement. Show Answer Correct Answer: D) The loss of natural habitat due to human settlement. 33. An organism that breaks down dead plant and animal material. A) Heterotroph. B) Autotroph. C) Producer. D) Decoposer. Show Answer Correct Answer: D) Decoposer. 34. The recovery of a damaged ecosystem A) Secondary Succession. B) Primary Succession. C) Pioneer Species. D) Deforestation. Show Answer Correct Answer: A) Secondary Succession. 35. Which of the following is NOT a type of eukaryotic cell? A) Mushroom cell. B) Pea leaf cell. C) Bacterial cell found in Swiss cheese. D) Alligator stomach cell. Show Answer Correct Answer: C) Bacterial cell found in Swiss cheese. 36. Which of the following habitats probably has the greatest number of plant and animal species? A) The African savannah. B) A rainforest in Brazil. C) A temperate forest in China. D) A temperate grassland in Kansas. Show Answer Correct Answer: B) A rainforest in Brazil. 37. When an animal needs to get energy, it must consume another organism. This means it is a ..... A) Consumer. B) Producer. Show Answer Correct Answer: A) Consumer. 38. What is an omnivore? A) An organism that only eats plants for energy. B) An organism that eats animals for energy. C) An organism that eats both plants and animals for energy. D) None of above. Show Answer Correct Answer: C) An organism that eats both plants and animals for energy. 39. An autotroph is an organism that can: A) Obtain energy by eating other organisms. B) Make its own food by doing photosynthesis. C) Spontaneously generate. D) Decompose other organisms to get energy. Show Answer Correct Answer: B) Make its own food by doing photosynthesis. 40. The Biosphere contains all ecosystems A) True. B) False. Show Answer Correct Answer: A) True. 41. Which of the following is NOT part of the carbon cycle? A) Photosynthesis. B) Condensation. C) Combustion. D) Respiration. Show Answer Correct Answer: B) Condensation. 42. Ecosystems require constant inputs of ..... from sunlight or chemicals. A) Exclusion. B) Energy. Show Answer Correct Answer: B) Energy. 43. Which of these is not an example of an organism's niche in its environment? A) Bees pollinating flowers. B) A snake sunning itself on a rock. C) A mosquito spreading disease among an elk population. D) Wolves keeping the population of elk balanced. Show Answer Correct Answer: B) A snake sunning itself on a rock. 44. First species to populate the area and eventually die adding organic material to help form soil for plants A) Pioneer species. B) Limiting factor. C) Climax community. D) None of above. Show Answer Correct Answer: A) Pioneer species. 45. What material is formed when organic matter is not fully decomposed in acidic waterlogged soils? A) Peat. B) Coal. C) Hydrogen. D) Oil. Show Answer Correct Answer: A) Peat. 46. What are groups of different populations living togther in the same place at the same time called? A) A biosphere. B) A population. C) A community. D) An organism. Show Answer Correct Answer: C) A community. 47. Worldwide, temperatures have been increasing for more than 100 years. Is this evidence of global warming? A) No. B) Yes. Show Answer Correct Answer: B) Yes. 48. Plankton are tiny aquatic organisms that swim around in the photic zone. A) False. B) True. Show Answer Correct Answer: A) False. 49. A living thing that can't make its own food and must eat other living things. A) Producer. B) Consumer. C) Decoposer. D) Instinct. Show Answer Correct Answer: B) Consumer. 50. Higher trophic levels of a food web generally have A) Less energy available. B) More organisms. C) Larger organisms. D) Greater biomass. Show Answer Correct Answer: A) Less energy available. 51. Living organisms that break down organic matter, making it available to primary producers A) Decoposer. B) Producer. C) Consumer. D) Detritivore. Show Answer Correct Answer: A) Decoposer. 52. Predator-Prey relationship A) An organism that participates in symbiosis. B) An organism that eats another organism. C) An organisms that is eaten by another organism. D) An organism that benefits at the expense of another organism. Show Answer Correct Answer: B) An organism that eats another organism. 53. What is a predator A) Animal eaten by other animal. B) Animal that eats plants. C) Animal that hunts and kills other animals. D) None of above. Show Answer Correct Answer: C) Animal that hunts and kills other animals. 54. What kind of factor:predation? A) Density-dependent. B) Density-independent. Show Answer Correct Answer: A) Density-dependent. 55. A bee pollinating a flower transferring the flowers material while the bee feeds on the flower. A) Commensalism. B) Parasitism. C) Mutualism. D) Predation. Show Answer Correct Answer: C) Mutualism. 56. Which relationship is referring to an interaction where one species benefits and the other is harmed? A) Competition. B) Parasitism. C) Predation. D) Symbiosis. Show Answer Correct Answer: B) Parasitism. 57. Which of the following is the smallest level of organization of organisms? A) Biome. B) Ecosystem. C) Population. D) Community. Show Answer Correct Answer: C) Population. 58. Hydroelectricity is power through A) Wind. B) Sun. C) Water. D) None of above. Show Answer Correct Answer: C) Water. 59. What is the correct order of levels of ecological organization? A) Organism CommunityPopulationEcosystemBiomeBiosphere. B) Organismcommunitypopulationecosystembiomebiosphere. C) OrganismPopulationCommunityEcosystemBiosphereBiome. D) Organismpopulationcommunityecosystembiomebiosphere. Show Answer Correct Answer: D) Organismpopulationcommunityecosystembiomebiosphere. 60. What are requirements for exponential growth to occur? A) Reproductive success. B) Unlimited food, water, shelter, and other resources. C) Absence of predators. D) All of these. Show Answer Correct Answer: D) All of these. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books