This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 72 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 72 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which level of an ecological pyramid has the largest number of individuals and biomass? A) Primary consumers. B) The level that contains producers. C) Secondary consumers. D) Top predators. Show Answer Correct Answer: B) The level that contains producers. 2. Which kind of factor is this? a fern A) Abiotic. B) Biotic. Show Answer Correct Answer: B) Biotic. 3. Which organisms have the most energy in a food web? A) Producers. B) Decomposers. C) Carnivores. D) Omnivores. Show Answer Correct Answer: A) Producers. 4. What energy role describes an organism that makes its own food, usually by using energy from the sun? A) Producer. B) Decoposer. C) Carnivore. D) Consumer. Show Answer Correct Answer: A) Producer. 5. I am the chef for the ecosystem because I am the only organism that can make my own food. A) Consumer. B) Producer. C) Decoposer. D) None of above. Show Answer Correct Answer: B) Producer. 6. A link in the food chain is known as A) Biomass. B) Trophic level. C) Tropic thunder. D) Niche. Show Answer Correct Answer: B) Trophic level. 7. More than one food chain is called food web. A) Wrong. B) Don't know. C) Ok. D) Which is not. Show Answer Correct Answer: C) Ok. 8. Terrestrial biomes include all the land and water areas on Earth where organisms live. A) True. B) False. Show Answer Correct Answer: B) False. 9. Everything within a certain environment, including plants, animals, and nonliving things like rocks and water A) Keystone species. B) Habitat. C) Pack. D) Ecosystems. Show Answer Correct Answer: D) Ecosystems. 10. What vocabulary term refers to all of the living things in an ecosystem? A) Biotic factors. B) Abiotic factors. Show Answer Correct Answer: A) Biotic factors. 11. What is population death? A) Everything is correct. B) Number of elderly people. C) The number of newly born individuals. D) The number of individuals that died in a certain period. E) Number of individuals unable to reproduce. Show Answer Correct Answer: D) The number of individuals that died in a certain period. 12. Several years after a building had been torn down and the ground cleared, grasses began to grow in that area. After 10 years, small bushes replaced the grasses. This pattern of plant growth is known as: A) Biologicalcontrol. B) Cover cropping. C) Ecological Succession. D) Land-use management. Show Answer Correct Answer: C) Ecological Succession. 13. Why do people cut trees down? A) To clear land. B) To free up space for agricultural reasons. C) To sell lumber. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. Microhabitat means? A) Small part of particular habitat. B) Large-scale environment. Show Answer Correct Answer: A) Small part of particular habitat. 15. Animals that eat primary producers (also known as herbivores) A) Producers. B) Primary Consumers. C) Secondary Consumers. D) Tertiary Consumers. Show Answer Correct Answer: B) Primary Consumers. 16. The portion of the earth in which all life exists is known as the A) Food Web. B) Climax Community. C) Biosphere. D) Ecological Succession. Show Answer Correct Answer: C) Biosphere. 17. What is the largest reservoir for water? A) The ocean. B) Rocks and minerals. C) The atmosphere. D) Glaciers. Show Answer Correct Answer: A) The ocean. 18. The source of all energy on Earth originates from: A) Fossil fuels. B) The Sun. C) Within Earth. D) Plants. Show Answer Correct Answer: B) The Sun. 19. Choose the right meaning:bin A) Trash can. B) Tin. C) Bottle. D) None of above. Show Answer Correct Answer: A) Trash can. 20. What is a resource? A) Life. B) Water. C) Light. D) All of the above. Show Answer Correct Answer: D) All of the above. 21. Which is an abiotic factor that most limits the number of frogs living in a pond? A) The populations of producers. B) The color of the water. C) The number of predators. D) The temperature of the water. Show Answer Correct Answer: D) The temperature of the water. 22. What is the variety of genes present? A) Genetic diversity. B) Species diversity. C) Extinction. D) Bidiversity. Show Answer Correct Answer: A) Genetic diversity. 23. When a fox eats a bunny the bunny is the ..... A) Parasite. B) Prey. C) Animal. D) Predator. Show Answer Correct Answer: B) Prey. 24. What is another name to describe an autotroph? A) Producer. B) Consumer. Show Answer Correct Answer: A) Producer. 25. What happens to energy as it moves through different levels in a pyramid? A) It increases. B) It decreases. C) It remains constant. D) None of above. Show Answer Correct Answer: B) It decreases. 26. An ecosystem comprising the ENTIRE EARTH and the organisms that inhabit it. A) Biome. B) Ecoregion. C) Abiotic. D) Biosphere. Show Answer Correct Answer: D) Biosphere. 27. Which 2 elements make up most of Earth's atmosphere? A) Nitrogen and Carbon Dioxide. B) Oxygen and Carbon Dioxide. C) Carbon Dioxide and Water Vapor. D) Nitrogen and Oxygen. Show Answer Correct Answer: D) Nitrogen and Oxygen. 28. Which is the primary source of energy for plants? A) Decoposer. B) Consumer. C) Producer. D) Sun. Show Answer Correct Answer: D) Sun. 29. The role and position a species has in its environment. A) Prey. B) Predator. C) Community. D) Niche. Show Answer Correct Answer: D) Niche. 30. Which biome has the most biodiversity(variety of life)? A) Savanna. B) Temperate Deciduous Forest. C) Desert. D) Tropical Rainforest. Show Answer Correct Answer: D) Tropical Rainforest. 31. An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. A) True. B) False. Show Answer Correct Answer: A) True. 32. Break down useful things like minerals that enrich the soil A) Decomposer. B) Consumer. C) Producer. D) None of above. Show Answer Correct Answer: A) Decomposer. 33. What is 1 benefit of monoculture farming? A) The ability to spend less money on fertilizer. B) The use of less water for irrigation. C) Disease and pest resistance of the crops. D) The ability to grow a lot of food. Show Answer Correct Answer: D) The ability to grow a lot of food. 34. Which of the following is a "primary energy source" ? A) Grass. B) Sun. C) Soil. D) Bacteria. Show Answer Correct Answer: B) Sun. 35. All of the populations in an ecosystem. All snakes, rats, and alligators in an area. A) Symbiosis. B) Population. C) Producer. D) Community. Show Answer Correct Answer: D) Community. 36. Bears eat both plants and meat. They are considered to be A) Carnivores. B) Scavengers. C) Herbivores. D) Omnivores. Show Answer Correct Answer: D) Omnivores. 37. What term best relates to equilibrium? A) Primary succession. B) Secondary succession. C) Climax community. D) Pioneer species. Show Answer Correct Answer: C) Climax community. 38. What happens to energy as you go up an energy pyramid? A) There is more energy as you go up. B) There is less energy as you go up. C) The amount of energy remains the same as you go up. D) The amount of energy varies. Show Answer Correct Answer: B) There is less energy as you go up. 39. A hollow, sealed glass sphere contains sand, water, air, algae, and tiny brine shrimp. The sphere is a model ecosystem. Which of these is a biotic factor of this ecosystem? A) Air. B) Algae. C) Sand. D) Water. Show Answer Correct Answer: B) Algae. 40. Which of the following is the correct order of ecological succession? A) Grasses-lichens-shrubs-trees. B) Lichens-shrubs-grasses-trees. C) Lichens-grasses-shrubs-trees. D) Grass-shrubs-lichens-trees. Show Answer Correct Answer: C) Lichens-grasses-shrubs-trees. 41. Eukaryotes include animal cells and plant cells? True or False? A) False. B) True. Show Answer Correct Answer: B) True. 42. What process is occurring when an autotroph is using chemical energy to produce sugars? A) Photosynthesis. B) Chemosynthesis. Show Answer Correct Answer: B) Chemosynthesis. 43. A species that is NOT native to a particular region is called A) Natural. B) Endemic. C) Exotic. D) Extraordinary. Show Answer Correct Answer: C) Exotic. 44. Is a rock considered abiotic or biotic? A) Abiotic. B) Biotic. C) Neither. D) None of above. Show Answer Correct Answer: A) Abiotic. 45. Which of the following is a density-dependent limiting factor? A) Natural disaster. B) Competition. C) Human activities. D) Unusual weather. Show Answer Correct Answer: B) Competition. 46. Which of the following is NOT a characteristic of a stable ecosystem. A) Major increase in population. B) Constant rate of energy flow. C) Resources that change at a predicable rate. D) All of the above. Show Answer Correct Answer: A) Major increase in population. 47. A tick on a cows back A) Parasitism. B) Commensalism. C) Mutualism. D) Vaderism. Show Answer Correct Answer: A) Parasitism. 48. Which statement best describes a trophic level? A) A trophic level is the feeding position of an organism in a food chain or web. B) A trophic level is the position of an organism in an ecosystem. Show Answer Correct Answer: A) A trophic level is the feeding position of an organism in a food chain or web. 49. The rocks that make up Earth are part which sphere? A) Biosphere. B) Hydrosphere. C) Geosphere. D) Cryosphere. Show Answer Correct Answer: C) Geosphere. 50. Which group of organisms performs photosynthesis? A) Scavengers. B) Autotrophs. C) Heterotrophs. D) Consumers. Show Answer Correct Answer: B) Autotrophs. 51. What are the factors related to ecosystems? A) Physical factors, chemical factors. B) Biological factors, physical factors. C) Chemical factors, other factors. D) Biological factors, chemical factors. Show Answer Correct Answer: B) Biological factors, physical factors. 52. I am Mother Nature's recycler because I take dead things and turn them back into soil. A) Consumer. B) Producer. C) Decoposer. D) None of above. Show Answer Correct Answer: C) Decoposer. 53. What does endangered mean? A) Break down of dead plants. B) Find a new home. C) Very few of its kind left. D) Gone forever. Show Answer Correct Answer: C) Very few of its kind left. 54. A close relationship between two species that benefits at least one of the species is called ..... A) Symbiosis. B) Natural selection. C) Competition. D) Adaptation. Show Answer Correct Answer: A) Symbiosis. 55. Which one of the following is an environmental variation? A) Male or female. B) Eye colour. C) Attached ear lobes. D) Short hair. Show Answer Correct Answer: D) Short hair. 56. A food web is composed of many ..... A) Fast-food chains. B) Food chains. C) Bike chains. D) Food webs. Show Answer Correct Answer: B) Food chains. 57. What does "cannibalism" mean in French? A) Competition. B) Endurance. C) House, farm. D) Cannibalism. E) My birth. Show Answer Correct Answer: D) Cannibalism. 58. Putting scientific knowledge to practical use is called ..... A) Producer. B) Demand. C) Consumer. D) Technology. Show Answer Correct Answer: D) Technology. 59. Certain individuals of a species being "fitter, " passing down traits which make them more successful in their environment. A) Selective Breeding. B) Natural Selection. Show Answer Correct Answer: B) Natural Selection. 60. A bird nests in a tree. This relationship is an example of ..... in ecosystems. A) Interdependence. B) Parasitism. C) Cooperation. D) Competition. Show Answer Correct Answer: A) Interdependence. ← 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