This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 69 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 69 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The number of individuals / unit of space A) Dispersion. B) Growth rate. C) Population density. D) Size. Show Answer Correct Answer: C) Population density. 2. Cause decay by breaking down complex molecules into simpler molecules A) Decoposer. B) Chemosynthesis. C) Consumer. D) Biomass. Show Answer Correct Answer: A) Decoposer. 3. Which living thing is not classified as a producer? A) Squirrel tail seaweed. B) Marijuana. C) Earthworm. D) Grass. Show Answer Correct Answer: C) Earthworm. 4. ..... states that two species cannot exist together if they compete for the same resources. One will either die out or migrate, or they will adapt to separate resources. A) Tolerance Principle. B) Competitive Exclusion Principle. C) Hardy-Weinberg Principle. D) Limiting Nutrient Principle. Show Answer Correct Answer: B) Competitive Exclusion Principle. 5. Which of these is the foundation of the Food Web and Energy Pyramid? A) Photosynthesis. B) Plants. C) Decomposers. D) Omnivores. Show Answer Correct Answer: A) Photosynthesis. 6. Which of these words does NOT describe an invasive species? A) Non-native. B) Alien. C) Natural. D) Intruder. Show Answer Correct Answer: C) Natural. 7. What term states that movement of an organisms into an area from another population? A) Migration. B) Relocating. C) Immigration. D) Emigration. Show Answer Correct Answer: C) Immigration. 8. A ..... makes its own energy and begins the food chain. A) Herbivore. B) Consumer. C) Producer. D) Decoposer. Show Answer Correct Answer: C) Producer. 9. Humans will cause more than half of the existing species in the world to go extinct in the next 100 years A) True. B) False. Show Answer Correct Answer: A) True. 10. Indicate the biotic and abiotic factors that affect the distribution of organisms in an environment. Herbivory A) Biotic. B) Abiotic. Show Answer Correct Answer: A) Biotic. 11. The role a species plays in a community is known as what? A) Habitat. B) Competition. C) Job. D) Niche. Show Answer Correct Answer: D) Niche. 12. True or False:The process by which water moves through the Earth and the atmosphere is called the nitrogen cycle. A) True. B) False. Show Answer Correct Answer: B) False. 13. Not just mere exercise in describing ecological patterns but also requires deep knowledge of species' biological structures in order to classify organisms. A) Taxonomic Ecology. B) Pattern Study. C) Taxonomy. D) Taxonomical Ecology. Show Answer Correct Answer: C) Taxonomy. 14. Sea anemone and boxer crabs have a symbiotic relationship in which the crabs hides from it's predators by hiding among an anemones stinging tentacles. The anemone eats food that is left over by the crab. This is an example of ..... A) Commensalism. B) Parasitism. C) Mimicry. D) Mutualism. Show Answer Correct Answer: D) Mutualism. 15. What is the defintion of a community? A) A living thing. B) A single organism. C) All the organisms of one species in a habitat. D) All the different species living in a habitat. Show Answer Correct Answer: D) All the different species living in a habitat. 16. Endemic species are A) Rare species. B) Species localized in a specific region. C) Critically endangered species. D) Cosmopolitan in distribution. Show Answer Correct Answer: B) Species localized in a specific region. 17. An animal that is hunted as food A) Prey. B) Decoposer. C) Producer. D) Predator. Show Answer Correct Answer: A) Prey. 18. Plants and animals can build up defense against predation through evolution A) Species survival. B) Learning. C) Hibernation. D) Adaptations. Show Answer Correct Answer: D) Adaptations. 19. All organisms of all the different species, living in a habitat are called ..... A) Ecosystem. B) Family. C) Population. D) Community. Show Answer Correct Answer: D) Community. 20. What are the 8 levels of classification of living things from most general to most specific? A) Domain, kingdom, phylum, class, order, family, genius, species. B) Domain, kingdom, phylum, class, order, family, genus, species. C) Domain, king, phillip, class, order, family, genus, species. D) Domain, kingdom, phamily, class, order, family, genus, species. Show Answer Correct Answer: B) Domain, kingdom, phylum, class, order, family, genus, species. 21. All living things in the environment A) Abiotic. B) Biotic. Show Answer Correct Answer: B) Biotic. 22. In the food pyramid, which level is right above the producer level? A) Tertiary Consumer. B) First Consumers. C) Secondary Consumer. D) Primary Consumers. Show Answer Correct Answer: D) Primary Consumers. 23. The amount of sunlight available for plants would be a: A) Limiting factor. B) Population. C) Abiotic number. D) Carrying capacity. Show Answer Correct Answer: A) Limiting factor. 24. Which process uses oxygen in plants, algae, and animals? A) Respiration. B) Transpiration. C) Chemosynthesis. D) Photosynthesis. Show Answer Correct Answer: A) Respiration. 25. The links of a food chain represent energy steps called A) Trophic levels. B) Food steps. C) Power levels. D) Prey levels. Show Answer Correct Answer: A) Trophic levels. 26. Which may lead to air pollution? A) Fires, but not volcanic activity. B) Fires and earthquakes. C) Sandstorms, but not volcanic mountain activity. D) Sand storms, as well as volcanic mountain activity. Show Answer Correct Answer: D) Sand storms, as well as volcanic mountain activity. 27. A female Atlantic green turtle is born with the need to travel to Ascension Island in the South Atlantic Ocean to lay eggs in the sand. This behavior is best described as ..... A) Variation. B) Hibernation. C) Instinct. D) Mutation. Show Answer Correct Answer: C) Instinct. 28. If an ecosystem has a carrying capacity of 1, 000 individuals for a given species & 2, 000 individuals of that species are present, we can predict that the population ..... A) Will show a clumped dispersion pattern. B) Size will decrease. C) Size will slowly increase. D) Size will remain at equilibrium. Show Answer Correct Answer: B) Size will decrease. 29. The interaction in which one organism kills another for food is ..... A) Ecology. B) Community. C) Competition. D) Predation. Show Answer Correct Answer: D) Predation. 30. The amount of species an ecosystem can support is a ..... A) Invasive species. B) Carrying capacity. C) Limiting factor. D) Population. Show Answer Correct Answer: B) Carrying capacity. 31. Exponential Growth is represented by ..... A) S-curve. B) Y-curve. C) J-curve. D) K-curve. Show Answer Correct Answer: C) J-curve. 32. Which is NOT an example of a limiting factor. A) Available Food & Water. B) Climate. C) Species color. D) Available Space & Shelter. Show Answer Correct Answer: C) Species color. 33. A model that shows the complex feeding relationships among organisms in a community. A) Food web. B) Population. C) Habitat. D) Producer. Show Answer Correct Answer: A) Food web. 34. The animal's foot is called a ..... A) Leg. B) Paw. C) Elbow. D) Knee. Show Answer Correct Answer: B) Paw. 35. The carrying capacity of an environment for a particular species at a particular time is determined by the A) Reproductivepotential of the species. B) Distribution of thepopulation. C) Number of individualsin the species. D) Supply of the mostlimited resources. Show Answer Correct Answer: D) Supply of the mostlimited resources. 36. Components of an ecosystem include A) Soil, sunlight, water, and weather. B) Grass, trees, bees, and ants. C) All the biotic and abiotic factors in an area. D) All of the above. Show Answer Correct Answer: D) All of the above. 37. Nonliving, physical features of the environment, including air, water, sun, soil, temperature, and climate. A) Biotic. B) Food chain. C) Abiotic. D) Producers. Show Answer Correct Answer: C) Abiotic. 38. A duck, a dragonfly, a morel mushroom and a bobcat are all examples of ..... A) Ecosystems. B) Communities. C) Populations. D) Organisms. Show Answer Correct Answer: D) Organisms. 39. Which of the following best explains why nitrogen fixation must take place? A) Atmospheric nitrogen is unusable to plants and animals. B) Nitrogen must be returned to the atmosphere. C) Animals must breathe in nitrogen. D) Nitrogen gets "stuck" in the soil and must be untrapped. Show Answer Correct Answer: A) Atmospheric nitrogen is unusable to plants and animals. 40. Camels live in the desert and have wide, flat, leathery pads on the bottoms of their feet. This ADAPTATION most likely helps them- A) Walk on hot sand. B) Find sources of water. C) Store water in their humps. D) None of above. Show Answer Correct Answer: A) Walk on hot sand. 41. Which two biomes have the least inches of precipitation (snow and rainfall)? A) Grassland and desert. B) Savanna and desert. C) Tundra and desert. D) Taiga and desert. Show Answer Correct Answer: C) Tundra and desert. 42. What are the 3 types of symbiosis? A) 1. Omnivorous 2. Carnivores 3. Herbivore. B) 1. Commensalism 2. Parasitism 3. Mutualism. C) 1. Producer 2. Consumer 3. Decomposer. D) None of above. Show Answer Correct Answer: B) 1. Commensalism 2. Parasitism 3. Mutualism. 43. An example of a biotic organism is A) Fire. B) Rivers. C) Fallen tree. D) Rock. Show Answer Correct Answer: C) Fallen tree. 44. Which cycle depends mostly on the action of different bacteria and microorganisms commonly found in the plants roots? A) Sulphur Cycle. B) Phosphorus Cycle. C) Carbon Cycle. D) Nitrogen Cycle. Show Answer Correct Answer: D) Nitrogen Cycle. 45. CO2 is removed from the atmosphere by: A) Respiration. B) Photosynthesis. C) Microorganisms. D) Decay. Show Answer Correct Answer: B) Photosynthesis. 46. ..... is when living things struggle against one another to get resources-like food, water, space, mates, etc. A) Competition. B) Cooperation. C) Predation. D) Symbiosis. Show Answer Correct Answer: A) Competition. 47. Match:infectious ..... A) Light bulb. B) Disease. C) Energy. D) Fuel. Show Answer Correct Answer: B) Disease. 48. Moss and lichen are often cited as examples of which? A) Climax community. B) Apex consumers. C) Primary consumers. D) Pioneer species. E) Decomposers. Show Answer Correct Answer: D) Pioneer species. 49. The tundra is a vast plain with frigid temperatures and plenty of snow. Which of the following adaptations does not help the polar bear survive in the tundra. A) Layers of fat for insulation. B) Webbed toes for swimming. C) Total herbivorous diet. D) White fur for camouflage. Show Answer Correct Answer: C) Total herbivorous diet. 50. A remora fish attaching to a shark is an example of what kind of symbiotic relationship? A) Mutualism. B) Commensalism. C) Competition. D) Parasitism. Show Answer Correct Answer: B) Commensalism. 51. Which of the following best describes parasitism? A) +/-. B) -/-. C) +/+. D) +/0. Show Answer Correct Answer: A) +/-. 52. Biotic factors of an ecosystem are: A) Plants. B) Soil. C) Living thing. D) Non-living. Show Answer Correct Answer: C) Living thing. 53. A consumer that eats only other consumers is called a A) Herbivore. B) Carnivore. C) Omnivore. D) Scavenger. Show Answer Correct Answer: B) Carnivore. 54. One way that humans could have a positive impact on local environments is to: A) Increase planting large areas of one crop. B) Increase the use of pesticides. C) Generate waste products as a result of technological advances. D) Use resources that are renewable. Show Answer Correct Answer: D) Use resources that are renewable. 55. An organism that eats both producers and other consumers. A) Omnivore. B) Carnivore. C) Herbivore. D) None of above. Show Answer Correct Answer: A) Omnivore. 56. ..... is when living things of the same species work together to survive. (like a pack of wolves) A) Predation. B) Symbiosis. C) Competition. D) Cooperation. Show Answer Correct Answer: D) Cooperation. 57. A species of animal or plants at risk but not yet endangered A) Threaten Species. B) Endangered Species. C) Extinction. D) None of above. Show Answer Correct Answer: A) Threaten Species. 58. Which of the following is one way that the Aboriginals would care for the land? A) By farming sheep. B) By using all the water. C) By farming native plants. D) They didn't take care of the land. Show Answer Correct Answer: C) By farming native plants. 59. Out of the following options, which would be considered an abiotic factor? A) Wood. B) Oak Tree. C) Wind. D) Pond Moss. Show Answer Correct Answer: C) Wind. 60. An ecosystem will most likely remain stable if A) Biotic factors decrease. B) It has a high level of biodiversity. C) It has more predators than prey. D) Finite resources decrease. Show Answer Correct Answer: B) It has a high level of biodiversity. ← 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