This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Earth > Ecology – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 26 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Let's play ..... together. A) Beach. B) Sandwich. C) Checkers. D) Sea. Show Answer Correct Answer: C) Checkers. 2. Competition can happen within ..... A) Only the same species. B) Only among different species. C) Both same and different species. D) None of above. Show Answer Correct Answer: C) Both same and different species. 3. How do animals get the nitrogen they need? A) From the sun. B) From the air they breathe. C) From the water they drink. D) From the food they eat. Show Answer Correct Answer: D) From the food they eat. 4. What animal from the list below lives in the ocean ecosystem? A) Lion. B) Tiger. C) Dolphin. D) Bear. Show Answer Correct Answer: C) Dolphin. 5. An organism that breaks down and recycles dead organisms A) Decoposer. B) Consumer. C) Predator. D) None of above. Show Answer Correct Answer: A) Decoposer. 6. How are the living creatures in an ecosystem linked? A) By what they eat. B) By their size. C) By their species'. D) By how they breathe. Show Answer Correct Answer: A) By what they eat. 7. Which is NOT a way to help protect biodiversity A) Going organic. B) Saving energy. C) Using plastics whenever possible. D) None of above. Show Answer Correct Answer: C) Using plastics whenever possible. 8. Antelope and zebras interacting is an example of a (n) A) Biome. B) Population. C) Ecosystem. D) Community. Show Answer Correct Answer: D) Community. 9. A plover is a little bird that walks around inside a crocodile's open mouth and cleans between the crocodile's teeth. What type of relationship is this? A) Commensalism. B) Mutualism. C) Parasitism. D) Competition. Show Answer Correct Answer: B) Mutualism. 10. A heterotroph is A) A consumer; organism that obtains energy from the foods in consumes. B) Organism that obtains energy by eating animals. C) Organism that obtains energy by eating plants. D) An organism that eats others. Show Answer Correct Answer: A) A consumer; organism that obtains energy from the foods in consumes. 11. Nitrogen makes up ..... percent of the atmosphere. A) 66%. B) 78%. C) 90%. D) None of above. Show Answer Correct Answer: B) 78%. 12. Which cycle ties Photosynthesis and cellular respiration? A) Carbon cycle. B) Phosphorus cycle. C) Nitrogen cycle. D) Water cycle. Show Answer Correct Answer: A) Carbon cycle. 13. Which is a tretiary consumer? A) Grasshopper. B) Lion. C) Oak Tree. D) Rabbit. Show Answer Correct Answer: B) Lion. 14. When humans EXHALE, we release ..... A) Nitrogen. B) Oxygen. C) Carbon Dioxide. D) Water. Show Answer Correct Answer: C) Carbon Dioxide. 15. Which of the following is the lowest on the food chain? A) Prey. B) Producer. C) Consumer. D) Apex Predator. Show Answer Correct Answer: B) Producer. 16. A watering hole in the African savannah was particularly small one year. The water limited the amount of organisms that were able to survive and this would be considered a: A) Biotic limiting factor. B) Unlimited resrouce. C) Exponential resource. D) Abiotic limiting factor. Show Answer Correct Answer: D) Abiotic limiting factor. 17. Which type of symbiosis is where one organism is benefited while the other is harmed? A) Parasitism. B) Symbiotic relationship. C) Mutualism. D) Commensalism. Show Answer Correct Answer: A) Parasitism. 18. What is the correct order on the Energy Pyramid? Starting at the bottom of the pyramid and going to the top A) 1. Primary Consumer2. Producer3. Secondary Consumer4. Tertiary Consumer. B) 1. Producer2. Primary Consumer3. Secondary Consumer4. Tertiary Consumer. C) Tertiary ConsumerSecondary consumerprimary consumerproducers. D) None of above. Show Answer Correct Answer: B) 1. Producer2. Primary Consumer3. Secondary Consumer4. Tertiary Consumer. 19. How would building a highway affect an environment? A) Saltwater pollutes freshwater. B) Marine life is threatened. C) Animals cannot travel through their ecosystem the same. D) None of above. Show Answer Correct Answer: C) Animals cannot travel through their ecosystem the same. 20. What process is occurring when an autotroph is using light energy to power a chemical reaction that converts carbon dioxide and water into sugar and oxygen? A) Photosynthesis. B) Chemosynthesis. Show Answer Correct Answer: A) Photosynthesis. 21. Which of the following is an example of a density-independent factor A) Natural disaster. B) Competition. C) Parasitism. D) Predation. Show Answer Correct Answer: A) Natural disaster. 22. The natural world A) Environment. B) Envajorment. C) Environment. D) Envirement. Show Answer Correct Answer: A) Environment. 23. Which of these is an autotroph? A) Consumer. B) Producer. C) Decomposer. D) None of above. Show Answer Correct Answer: B) Producer. 24. Living things need nitrogen. The nitrogen gas in Earth's atmosphere must be changed into ammonia before most living things can use it. Which of these organisms can change nitrogen gas into ammonia? A) Mold. B) Moss. C) Bacteria. D) Yeast. Show Answer Correct Answer: C) Bacteria. 25. What will happen if all of the frogs in a population die? A) The frogs' predators will decrease and the frogs' prey will increase. B) The frogs' predators will increase and the frogs' prey will decrease. Show Answer Correct Answer: A) The frogs' predators will decrease and the frogs' prey will increase. 26. When the environment changes more quickly then a species can adapt to the changes, the species may become A) Overpopulated. B) Dominate. C) Extinct. D) Diverse. Show Answer Correct Answer: C) Extinct. 27. Tapeworms reside in the human intestine and take nutrients from the human. This is an example of: A) Symbiosis. B) Parasitism. C) Commensalism. D) Mutualism. Show Answer Correct Answer: B) Parasitism. 28. An omnivore is an organism that eats ..... A) Plants and animals. B) Only plants. C) Only Animals. D) Dead organisms. Show Answer Correct Answer: A) Plants and animals. 29. The primary source of energy in an ecosystem comes from: A) Consumers. B) Decomposers. C) Sun. D) Producers. Show Answer Correct Answer: C) Sun. 30. Represents or describes the component of an ecological system. A) Ecological Model. B) Ecology. C) Biosphere. D) Interdependence. Show Answer Correct Answer: A) Ecological Model. 31. Which of the following is an example of symbiosis? A) A mother bear taking care of her cub. B) A married couple who agree to split their rent and share housework duties. C) A worm living in a cow's intestine. D) One chimp cleaning and grooming the hair of another chimp. Show Answer Correct Answer: C) A worm living in a cow's intestine. 32. How many trees it takes to make 5 tons of paper? A) 85. B) 321. C) 76. D) 34. Show Answer Correct Answer: A) 85. 33. An area of land that has similar biotic and abiotic conditions is a ..... A) Biosphere. B) Population. C) Community. D) Biome. Show Answer Correct Answer: D) Biome. 34. Are they helping environment A) Yes. B) No. Show Answer Correct Answer: A) Yes. 35. How do humans contribute to the carbon cycle? A) Ride bicycles and walk everywhere. B) Burning fossil fuels and deforestation. Show Answer Correct Answer: B) Burning fossil fuels and deforestation. 36. All nonliving things in the environment A) Biotic. B) Abiotic. Show Answer Correct Answer: B) Abiotic. 37. Which of the following stores most of the earth's carbon? A) Humans. B) Ocean. C) Atmosphere. D) Rock. Show Answer Correct Answer: B) Ocean. 38. The amount of water on Earth is constant, and continually recycled over time:some of the water you drink will have passed through a dinosaur. A) 47. B) Blue. C) True. D) False. Show Answer Correct Answer: C) True. 39. All of the following are limiting factors except A) Immigration. B) Competition. C) Predation. D) None of above. Show Answer Correct Answer: A) Immigration. 40. Which of these nitrogen molecules would be present in the atmosphere? A) Type. B) Nah. C) Na. D) NH4+. Show Answer Correct Answer: C) Na. 41. What does an ATP molecule provide for the prokaryotic cell? A) Potential and Radiant Energy. B) Chemical and potential energy. Show Answer Correct Answer: B) Chemical and potential energy. 42. This is released by the weathering of rocks. A) Carbonate. B) Phosphorus. C) Nitrogen. D) Phosphate. Show Answer Correct Answer: D) Phosphate. 43. Define mutualism A) The way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other. B) Mutualism is the way two organisms of different species exist in a relationship in which each individual DOES NOT BENEFIT from the activity of the other. C) None of the above. D) None of above. Show Answer Correct Answer: A) The way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other. 44. During a school picnic, Nora, Michael, and Ethan were discussing their food habits. Nora said she eats both plants and animals. What would you call Nora based on her food habits? A) Omnivore. B) Carnivore. C) Herbivore. D) Vegetarian. Show Answer Correct Answer: A) Omnivore. 45. What is the gradual introduction of harmful chemicals in the food chain? A) Chemical decomposition. B) Life enhancement. C) Biology. D) Biological enhancement. Show Answer Correct Answer: D) Biological enhancement. 46. ..... is when one organism (a predator) eats another organism (the prey). A) Symbiosis. B) Predation. C) Competition. D) Cooperation. Show Answer Correct Answer: B) Predation. 47. Match:industrial ..... A) Layer. B) Waste. C) Shortage. D) Footprint. Show Answer Correct Answer: B) Waste. 48. All the interacting organisms living in an area A) Habitat. B) Community. C) Population. D) Ecosystem. Show Answer Correct Answer: B) Community. 49. Which of the following is considered to be the most important element in living organisms? A) Oxygen. B) Carbon. C) Hydrogen. D) Phosphorus. Show Answer Correct Answer: B) Carbon. 50. This type of organism feeds on dead organic material. A) Carnivore. B) Decoposer. C) Deritivore. D) Omnivore. Show Answer Correct Answer: C) Deritivore. 51. Physical features of an organism like the bill on a bird or the fur on a bear. A) Good abs. B) Natural selection. C) Behavioral adaptations. D) Structural adaptations. Show Answer Correct Answer: D) Structural adaptations. 52. Elephants move OUT of an area A) Carrying capacity. B) Immigration. C) Limiting factor. D) Emigration. Show Answer Correct Answer: D) Emigration. 53. If paleontologists find fossils of many different species existing in the same area at approximately the same time, the paleontologists can conclude that the ecosystem in this area had a high degree of- A) Episodic speciation. B) Biological diversity. C) Climatic variation. D) Geographic isolation. Show Answer Correct Answer: B) Biological diversity. 54. What is the name for the top animal of the food chain A) Decoposer. B) Apex predator. C) Producer. D) Primary consumer. Show Answer Correct Answer: B) Apex predator. 55. What type of species interaction is the following:two bears fighting over the same mate. A) Competition. B) Mutualism. C) Predation. D) Parasitism. Show Answer Correct Answer: A) Competition. 56. A large geographical area that is characterized by its climate, flora (plants), and fauna (animals). A) Biome. B) Community. C) Ecosystem. D) Habitat. Show Answer Correct Answer: A) Biome. 57. What is renewable energy not? A) Wind energy. B) Biomass energy. C) Carbon energy. D) None of above. Show Answer Correct Answer: C) Carbon energy. 58. A scientist was studying a population of fish in a pond over a period of 10 years. He observed thatthe population increased each year for 3 years, and then remained nearly constant for the rest ofthe study. The best explanation for this observation is that the population had A) Stopped reproducing. B) Reached carrying capacity. C) Mutated into a different species. D) Run out of food and all died. Show Answer Correct Answer: B) Reached carrying capacity. 59. Which gas makes up 78% of our atmosphere? A) Oxygen. B) Ill. C) Water vapor. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 60. Which biome is hot all year with wet and dry seasons? A) Tropical rainforest. B) Arctic tundra. C) Temperate grassland. D) Desert. Show Answer Correct Answer: D) Desert. ← 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