This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 82 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 82 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are sources of water pollution? A) Precipitation as Acid rain. B) Runoff water & Groundwater. C) Industry & Household waste. D) All of these. Show Answer Correct Answer: D) All of these. 2. A herbivore is a ..... A) Consumer that eats both plants and other animals. B) Consumer that only eats other animals. C) Consumer that only eats plants. D) None of above. Show Answer Correct Answer: C) Consumer that only eats plants. 3. In which biome would I be most likely to find buffalo? A) Desert. B) Temperate deciduous forest. C) Taiga. D) Grasslands. Show Answer Correct Answer: D) Grasslands. 4. What group of organisms are the most plentiful in an ecosystem? (which group has the biggest population) A) Producers. B) Decomposers. C) Apex Predators. D) Consumers. Show Answer Correct Answer: A) Producers. 5. Scientists discover a new species of tree that is adapted well for a cold environment with a moderate amount of rainfall. In which biome would this new species most likely be found? A) Taiga. B) Tropical forest. C) Tundra. D) Deciduous forest. Show Answer Correct Answer: A) Taiga. 6. An inability to adapt to environmental changes can lead to death of all members of a species. This is called ..... A) Extinction. B) Examination. C) Extermination. D) Expatriation. Show Answer Correct Answer: A) Extinction. 7. When organisms move in from another environment. A) Immigration. B) Emigration. Show Answer Correct Answer: A) Immigration. 8. Movement from one area to another A) Hibernation. B) Extinction. C) Migration. D) Physical adaptation. Show Answer Correct Answer: C) Migration. 9. Decomposition releases ..... into the soil A) Oxygen. B) Nitrogen. C) Helium. D) Hydrogen. Show Answer Correct Answer: B) Nitrogen. 10. Which arrow is pointing to the carrying capacity of this community? A) C. B) F. C) A. D) D. E) E. Show Answer Correct Answer: B) F. 11. In an energy pyramid, what has the most energy? A) Scavengers. B) Producers. C) First level consumers. D) Third level consumers. Show Answer Correct Answer: B) Producers. 12. ..... brings phosphorous into our waterways ..... A) Condensation. B) Runoff. C) Transpiration. D) Precipitation. Show Answer Correct Answer: B) Runoff. 13. Oxygen is a gas produced by ..... and used by ..... A) Plants and animals. B) Photosynthesis and carbon dioxide. C) Animals and plants. D) Carbon dioxide and photosynthesis. Show Answer Correct Answer: A) Plants and animals. 14. What is the symbiotic relationship called which one organism is helped and the other organism is unharmed? A) Commensalism. B) Mutualism. C) Parasitism. D) Consumer. Show Answer Correct Answer: A) Commensalism. 15. When we create something new out of old materials we ..... A) Recycle. B) Cycle. Show Answer Correct Answer: A) Recycle. 16. A complex mixture of interconnected food chains A) Energy Pyramid. B) Symbiosis. C) Food Web. D) Food Chain. Show Answer Correct Answer: C) Food Web. 17. Which best explains why producers are at the beginning of all food chains? A) They turn dead animals into nutrients. B) They provide shelter for smaller animals. C) The transfer energy from the sun into food. D) None of above. Show Answer Correct Answer: C) The transfer energy from the sun into food. 18. The factors that limit the size of a population are: A) Carrying capacity. B) Abiotic number. C) Limiting factor. D) Population. Show Answer Correct Answer: C) Limiting factor. 19. The physical place where an organism lives is known as its A) Biome. B) Habitat. C) Community. D) Niche. Show Answer Correct Answer: B) Habitat. 20. Which limiting factor most affects the population growth of plants in a garden? A) Types of tools used in planting. B) Number of seeds planted. C) Number of people tending the plants. D) Space between plants. Show Answer Correct Answer: D) Space between plants. 21. A flower is considered A) Biotic. B) Abiotic. Show Answer Correct Answer: A) Biotic. 22. When a organism struggles for limited resources A) Community. B) Commensalism. C) Competition. D) Communism. Show Answer Correct Answer: C) Competition. 23. Organisms that directly use energy from the sun to make their own food are called A) Autotrophs. B) Heterotrophs. C) Decomposers. D) Carnivores. Show Answer Correct Answer: A) Autotrophs. 24. Spiders eat flies. When drawing the food web for this relationship, you should draw the arrow: A) FROM the spider, TO the fly. B) FROM the fly, TO the spider. Show Answer Correct Answer: B) FROM the fly, TO the spider. 25. Which includes all living and nonliving components in an area? A) Ecosystem. B) Community. C) Organism. D) Population. Show Answer Correct Answer: A) Ecosystem. 26. Eats certain types of food A) Specialist. B) Generalist. C) Omnivore. D) None of above. Show Answer Correct Answer: A) Specialist. 27. What typically happens to a population if it exceeds its carrying capacity? A) Prey species increase. B) Birth rate will exceed death rate. C) Migration into the area increases. D) Death rate will start to exceed birth rate. Show Answer Correct Answer: D) Death rate will start to exceed birth rate. 28. What happens to carbon dioxide, oxygen & photosynthesis during deforestation? A) Photosynthesis decreases and carbon dioxide increases in the atmosphere. Oxygen decreases. B) Photosynthesis increases and carbon dioxide increases in the atmosphere. Oxygen increases. C) Photosynthesis doesn't change, carbon dioxide increases, and oxygen decreases. D) Photosynthesis decreases, Carbon Dioxide decreases, and Oxygen increases. Show Answer Correct Answer: A) Photosynthesis decreases and carbon dioxide increases in the atmosphere. Oxygen decreases. 29. The maximum number of individuals moving into a population. A) Carrying capacity. B) Fluctuation. C) Dispersion. D) Limiting factor. Show Answer Correct Answer: A) Carrying capacity. 30. In a food chain the flow of energy is always ..... A) One way. B) Two way. C) Uncontrolled. D) Reversible. Show Answer Correct Answer: A) One way. 31. The tropical rain forest biome includes regions of several continents. What do all of the regions have in common? A) Same species of animals. B) Same patterns of precipitation and temperature. C) Same area of land covered by vegetations. D) None. Show Answer Correct Answer: B) Same patterns of precipitation and temperature. 32. When organisms consume others, energy is being ..... A) Gained. B) Lost. Show Answer Correct Answer: B) Lost. 33. All the living things in an area makes up a(n): A) Population. B) Biome. C) Ecosystem. D) Community. Show Answer Correct Answer: D) Community. 34. When one organism hunts, eats, and kills anither organism for survival A) Competitive Relationships. B) Predator-PreyRelationships. C) Copperative Relationships. D) None of above. Show Answer Correct Answer: B) Predator-PreyRelationships. 35. Continued depletion of the ozone layer will most likely result in A) Anincrease in skin cancer among humans. B) A decreasein atmospheric pollutants. C) Anincrease in marine ecosystem stability. D) Adecrease in climatic changes. Show Answer Correct Answer: A) Anincrease in skin cancer among humans. 36. Water, soil, minerals, nitrogen and energy are all essential ..... components of an ecosystem. A) Materials. B) Abiotic. C) Biotic. D) Environmental. Show Answer Correct Answer: B) Abiotic. 37. Two different species fighting for the same resources often enough will lead to what outcome? A) Interspecific mating. B) Predation. C) Competitive exclusion. D) Intraspecific competition. Show Answer Correct Answer: C) Competitive exclusion. 38. Which of the following biomes is the coldest, has a low animal population, and very little precipitation? A) Tundra. B) Desert. C) Rainforest. D) Grassland. Show Answer Correct Answer: A) Tundra. 39. Organisms that use dead organisms and the waste material of other organisms for food. A) Producer. B) Decoposer. C) Consumer. D) Independent consumer. Show Answer Correct Answer: B) Decoposer. 40. When a population multiplies by a constant factor at constant time intervals, it is called A) Logistic growth. B) Exponential growth. C) Competitive exclusion. D) Population density. Show Answer Correct Answer: B) Exponential growth. 41. Which of the following contains all Black Bears living in an area? A) Organism. B) Ecosystem. C) Community. D) Population. Show Answer Correct Answer: D) Population. 42. Which explanation best describes the phosphorus cycle? Phosphorus is A) Found in atmosphere and is used in transpiration and evaporation. B) Not found in atmosphere and is used in transpiration and evaporation. C) Found in atmosphere and is used in DNA, RNA and ATP. D) Not found in atmosphere and is used in DNA, RNA and ATP. Show Answer Correct Answer: D) Not found in atmosphere and is used in DNA, RNA and ATP. 43. True or False:Survival of the fittest means best or the physically fittest. A) True. B) False. Show Answer Correct Answer: B) False. 44. The average weather conditions in an area over a long period of time A) Climate. B) Weather. C) Global warming. D) Pollution. Show Answer Correct Answer: A) Climate. 45. What determines the number of trophic levels in an ecological pyramid? A) It is limitless. B) There is no way to determine the number. C) The amount of energy available. D) There are always four trophic levels. Show Answer Correct Answer: C) The amount of energy available. 46. In a food web, what would a decomposer do? A) Eat soil and rock. B) Feed on meat or plants. C) Break down dead organisms. D) Convert carbon dioxide to oxygen. Show Answer Correct Answer: C) Break down dead organisms. 47. Don't go there. It isn't ..... A) Sweet. B) Safe. C) Sure. D) Difficult. Show Answer Correct Answer: B) Safe. 48. Green plants and algae make their own food through photosynthesis. What is photosynthesis? A) A cell process that uses energy from sunlight to convert water and oxygen into food. B) A cell process that uses energy from sunlight to convert water and glucose into food. C) A cell process that uses energy from sunlight to convert water and chlorophyll into food. D) A cell process that uses energy from sunlight to convert water and carbon dioxide into food. Show Answer Correct Answer: D) A cell process that uses energy from sunlight to convert water and carbon dioxide into food. 49. What are aquatic organisms that live at the bottom of a body of water? A) Photic. B) Benthos. C) Bateric. D) Lateral. Show Answer Correct Answer: B) Benthos. 50. The surroundings in which an organism lives A) Ecosystem. B) Niche. C) Environment. D) Biotic. Show Answer Correct Answer: C) Environment. 51. Great horned owls and red-tailed hawks have similar requirements for food, space, and nesting materials. What would most likely be the result of great horned owls and red-tailed hawks living in the same community? A) Ecological succession. B) Competition. C) Habitat destruction. D) Parasitism. Show Answer Correct Answer: B) Competition. 52. A group of ecosystems with similar climates and types of organisms is called A) Hemisphere. B) Ecosystem. C) Biome. D) Community. Show Answer Correct Answer: C) Biome. 53. An inherited trait that helps those organisms that have it to survive A) Adaptation. B) Characteristic. C) Structure. D) Niche. Show Answer Correct Answer: A) Adaptation. 54. The variable "k" in population ecology refers to ..... A) The carrying capacity of an environment. B) The rate of dispersion within an environment. C) Amount of kangaroos in an ecosystem. D) Rate of growth. Show Answer Correct Answer: A) The carrying capacity of an environment. 55. When members of a population work together it is called ..... A) Competition. B) Cooperation. C) Mutualism. D) None of above. Show Answer Correct Answer: B) Cooperation. 56. What is the prefer pH range for aquatic creatures? A) 6.8. B) 5.5-8. C) 6.5-9. D) 6-7. Show Answer Correct Answer: C) 6.5-9. 57. What can you infer from the fact that the disappearance of just one species can disrupt an entire food chain? A) Food chains are extremely fragile. B) Food chains would not exist without humans. C) Food chains can regenerate on their own. D) Every food chain depends entirely on a single species. Show Answer Correct Answer: A) Food chains are extremely fragile. 58. What process occurs when coal (fossil fuel) is used for energy? A) Decomposition. B) Pressurization. C) Combustion. D) Respiration. Show Answer Correct Answer: C) Combustion. 59. What level on an energy pyramid has organisms having the MOST energy? A) Top level. B) Bottom level. C) Middle level. D) None of above. Show Answer Correct Answer: B) Bottom level. 60. In this relationship, predators live on/in a host and depend on the host for nutrition A) Commensalism. B) Parasitism. C) Advantage relationship. D) Self defense. Show Answer Correct Answer: B) Parasitism. ← 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