This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 80 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 80 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A heterotroph is A) A consumer; organism that obtains energy from the foods in consumes. B) An organism that eats others. C) Organism that obtains energy by eating plants. D) Organism that obtains energy by eating animals. Show Answer Correct Answer: A) A consumer; organism that obtains energy from the foods in consumes. 2. Nitrogen makes up ..... percent of the atmosphere. A) 66%. B) 78%. C) 90%. D) None of above. Show Answer Correct Answer: B) 78%. 3. Ecology studies A) Interactions between Biotic organisms. B) Interactions between Abiotic organisms. C) The interactions in different environments. D) The interaction between biatic factors and abiotic factors. Show Answer Correct Answer: D) The interaction between biatic factors and abiotic factors. 4. Which cycle ties Photosynthesis and cellular respiration? A) Carbon cycle. B) Nitrogen cycle. C) Phosphorus cycle. D) Water cycle. Show Answer Correct Answer: A) Carbon cycle. 5. Which is a tretiary consumer? A) Lion. B) Rabbit. C) Grasshopper. D) Oak Tree. Show Answer Correct Answer: A) Lion. 6. When humans EXHALE, we release ..... A) Oxygen. B) Carbon Dioxide. C) Nitrogen. D) Water. Show Answer Correct Answer: B) Carbon Dioxide. 7. Which of the following is the lowest on the food chain? A) Consumer. B) Prey. C) Producer. D) Apex Predator. Show Answer Correct Answer: C) Producer. 8. 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) Unlimited resrouce. B) Biotic limiting factor. C) Abiotic limiting factor. D) Exponential resource. Show Answer Correct Answer: C) Abiotic limiting factor. 9. Which type of symbiosis is where one organism is benefited while the other is harmed? A) Symbiotic relationship. B) Mutualism. C) Commensalism. D) Parasitism. Show Answer Correct Answer: D) Parasitism. 10. 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. 11. 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. 12. 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. 13. Which of the following is an example of a density-independent factor A) Parasitism. B) Predation. C) Competition. D) Natural disaster. Show Answer Correct Answer: D) Natural disaster. 14. The natural world A) Environment. B) Environment. C) Envajorment. D) Envirement. Show Answer Correct Answer: A) Environment. 15. A rock A) Biotic. B) Abiotic. Show Answer Correct Answer: B) Abiotic. 16. Which of these is an autotroph? A) Consumer. B) Producer. C) Decomposer. D) None of above. Show Answer Correct Answer: B) Producer. 17. 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) Yeast. C) Moss. D) Bacteria. Show Answer Correct Answer: D) Bacteria. 18. 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. 19. When the environment changes more quickly then a species can adapt to the changes, the species may become A) Extinct. B) Diverse. C) Dominate. D) Overpopulated. Show Answer Correct Answer: A) Extinct. 20. Tapeworms reside in the human intestine and take nutrients from the human. This is an example of: A) Symbiosis. B) Parasitism. C) Mutualism. D) Commensalism. Show Answer Correct Answer: B) Parasitism. ← 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