This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 263 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 263 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The most energy is available at the ..... level of an energy pyramid? A) Consumer. B) Predator. C) Decoposer. D) Producer. Show Answer Correct Answer: D) Producer. 2. A tanker that runs aground causing oil to leak into the ocean is a ..... water pollutant. A) Point-Source. B) Nonpoint-Source. Show Answer Correct Answer: A) Point-Source. 3. If there is not enough food, a species may ..... A) Become extinct. B) Thrive. C) Live longer. D) None of above. Show Answer Correct Answer: A) Become extinct. 4. All the organisms of the same species in an area A) Biome. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: B) Population. 5. To be considered a community, populations must live close enough together to interact. A) True. B) False. Show Answer Correct Answer: A) True. 6. Identify an a example of an Abiotic Factor? A) Panda. B) Turtle. C) Butterfly. D) Sunlight. Show Answer Correct Answer: D) Sunlight. 7. The main source of energy for all of earth's food chains is the ..... A) Sun. B) Water. C) Nutrients. D) Producers. Show Answer Correct Answer: A) Sun. 8. Competitive exclusion principle is A) Principle that states no two species can occupy the same niche in the same habitat at the same time. B) Principle that states I am so hungry that I can eat a hippo. C) Principle that states light, food and space are NOTHING. D) Principle that states an organism can reproduce. Show Answer Correct Answer: A) Principle that states no two species can occupy the same niche in the same habitat at the same time. 9. In the oxygen-carbon dioxide cycle, organisms such as plants release oxygen into the atmosphere during ....., where it can be taken in by animals, plants, and other organisms. A) Cellular respiration. B) Commensalism. C) Homeostasis. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 10. When only a few of its members are living that the entire species may become extinct. A) Biological species. B) Evolutionary species. C) Threatened species. D) Endangered species. Show Answer Correct Answer: D) Endangered species. 11. The term ecologists use to describe the number of individuals moving away from a population is A) Emigration. B) Immigration. Show Answer Correct Answer: A) Emigration. 12. What are abiotic factors? A) Factors that are living. B) Factors that are non-living. C) Factors that affect animals. D) Factors that affect plants. Show Answer Correct Answer: B) Factors that are non-living. 13. As the hawk population increases in an ecosystem, the deer and mouse population will most likely decrease as a result of: A) Decrease in food source. B) Increase in disease. C) Increase in predators. D) Decrease in habitat. Show Answer Correct Answer: C) Increase in predators. 14. When one organism preys on another organism for food A) Predation. B) Prey. C) Cooperation. D) Competition. Show Answer Correct Answer: A) Predation. 15. Given this statement, which trophic level does the snake belong to?A snake that eats a frog that has eaten an insect that fed on a plant A) Primary producer. B) Primary consumer. C) Secondary consumer. D) Tertiary consumer. Show Answer Correct Answer: D) Tertiary consumer. 16. Carbon dioxide is produced by the burning of fossil fuels A) True. B) False. Show Answer Correct Answer: A) True. 17. Why is the ocean important to the carbon cycle? A) It keeps sediment containing carbon underwater for millions of years. B) The ocean gives out more carbon then it takes in (increases global warming). C) The ocean isn't important to the carbon cycle. D) None of above. Show Answer Correct Answer: A) It keeps sediment containing carbon underwater for millions of years. 18. Human actions that release carbon into the atmosphere include A) Breathing. B) Making cement. C) Burning fossil fuels. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. Anything that can live on its own A) Organism. B) Population. C) Community. D) Ecosystem. E) Biosphere. Show Answer Correct Answer: A) Organism. 20. An example of a density dependent factor would be ..... A) The speed of the current in a river. B) Going through a drought. C) Competition for food. D) How much rainfall an ecosystem gets per year. Show Answer Correct Answer: C) Competition for food. ← PreviousNext →Related QuizzesScience QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books