This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 279 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 279 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. As you move up an energy pyramid, the amount of energy ..... A) Stays the same. B) Increases. C) Decreases. D) None of above. Show Answer Correct Answer: C) Decreases. 2. Nonliving factors in an environment are ..... A) Biotic. B) Abiotic. Show Answer Correct Answer: B) Abiotic. 3. The movement of carbon dioxide and oxygen on Earth by the processes of respiration and photosynthesis. A) Carbon Dioxide-Oxygen Cycle. B) Oxygen. C) Carbon Dioxide. D) Respiration. Show Answer Correct Answer: A) Carbon Dioxide-Oxygen Cycle. 4. Why is matter not lost as it passes through an ecosystem? A) Matter is recycled. This recycling involves specific interactions between the biotic and abiotic factors in an ecosystem. B) The chemical elements and water that are needed by organisms continuously recycle in ecosystems. They pass through biotic and abiotic components of the biosphere. Show Answer Correct Answer: A) Matter is recycled. This recycling involves specific interactions between the biotic and abiotic factors in an ecosystem. 5. A relationship between two species in which both species benefit A) Mutualism. B) Commensalism. C) Symbiosis. D) Camouflage. Show Answer Correct Answer: A) Mutualism. 6. Anything that prevents a population from growing larger. A) Limiting factor. B) Disease. C) Availability. D) None of above. Show Answer Correct Answer: A) Limiting factor. 7. What do antibodies do? A) Bind and flag infectious agents. B) Destroy infectious agents. Show Answer Correct Answer: A) Bind and flag infectious agents. 8. A one-way relationship where one species benefits at the expense of another is called ..... ? A) Commensalism. B) Competitive exclusion. C) Parasitism. D) An obligatory relationship. Show Answer Correct Answer: C) Parasitism. 9. Which of the following is the most simple level of ecological organization? A) A community. B) An individual or species. C) A population. D) An ecosystem. Show Answer Correct Answer: B) An individual or species. 10. Which energy level is an interrelated food chain in an ecosystem? A) Food sphere. B) Food trophic. C) Food web. D) None of above. Show Answer Correct Answer: C) Food web. 11. What type of population measurement is it when organisms are captured and marked then captured again? A) Estimate by sampling. B) Count every individual. C) Mark and Recapture. D) Population Density. Show Answer Correct Answer: C) Mark and Recapture. 12. Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Then the honey guide birds eat. A) Mutualism. B) Commensalism. C) Predation. D) Competition. Show Answer Correct Answer: A) Mutualism. 13. If only 10% of an organism's energy is available for the next trophic level, what happens with the other 90% of the energy? A) It is destroyed after it is used up. B) It is used for life processes like movement, creating offspring producing waste or lost as body heat. C) It is used to grow plants. D) It is lost completely as body heat. Show Answer Correct Answer: B) It is used for life processes like movement, creating offspring producing waste or lost as body heat. 14. Which of the following is not a characteristic of a pioneer species? A) They can be species like lichen or moss. B) They reproduce slowly and rarely. C) They are small. D) They are the first to populate an ecosystem. Show Answer Correct Answer: B) They reproduce slowly and rarely. 15. Animals obtain the nitrogen they need directly from the A) Soil in their habitat. B) Air they breathe. C) Plants they eat. D) Bacteria living within them. Show Answer Correct Answer: C) Plants they eat. 16. Which of these is a MAJOR cause of acid rain? A) Spraying pesticides on crops. B) Burning fossil fuels for energy. C) Dumping sewage in river systems. D) Using uranium to generate electricity. Show Answer Correct Answer: B) Burning fossil fuels for energy. 17. What is the level of organization where the community is interacting with abiotic factors? A) Community. B) Ecosystem. C) Population. D) Biome. Show Answer Correct Answer: B) Ecosystem. 18. The bodies of all living things are based on carbon. Which of the following is the primary source of carbon in living things? A) Carbon compounds stored in fossil fuels. B) Carbon compounds in the soil. C) Dissolved carbon dioxide in the biosphere. D) Carbon dioxide in the atmosphere. Show Answer Correct Answer: D) Carbon dioxide in the atmosphere. 19. The intense heat from Earth's interior that warms the magma beneath Earth's surface is called ..... A) Hydrogen power. B) Tidal energy. C) Geothermal energy. D) Solar energy. Show Answer Correct Answer: C) Geothermal energy. 20. What is the original source of energy in any food web? 5-2.4 A) Carbon dioxide. B) Oxygen. C) Sugar. D) Sunlight. Show Answer Correct Answer: D) Sunlight. ← PreviousNext →Related QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9Ecology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books