This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 245 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 245 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is NOT an example of limiting factors? A) Migration. B) Food source. C) Space. D) Predation. Show Answer Correct Answer: A) Migration. 2. An abiotic factor is: A) A non-living organic molecule affecting and ecosystem. B) A non-living factor affecting ecosystems such as sunlight. C) A living factor that affects ecosystems such as the number of prey available. D) A living molecule affecting an ecosystem. Show Answer Correct Answer: B) A non-living factor affecting ecosystems such as sunlight. 3. Which of the following is density-independent limiting factor? A) Disease. B) Competition. C) Earthquake. D) Predation. Show Answer Correct Answer: C) Earthquake. 4. Grass$\rightarrow$rabbit $\rightarrow$ fox A) Food chain. B) Food web. C) Energy pyramid. D) None of above. Show Answer Correct Answer: A) Food chain. 5. An organism that gets energy from eating dead organisms, non-living material or waste A) Producer. B) Consumer. C) Decoposer. D) None of above. Show Answer Correct Answer: C) Decoposer. 6. A new pathogen can wipe out a species because the species has no ..... to the new pathogen A) Resistance. B) Defence. C) Camouflage. D) Antibiotics. Show Answer Correct Answer: A) Resistance. 7. Which of the following take carbon dioxide out of the atmosphere? A) Plant and animal respiration. B) Volcanoes. C) Combustion of fossil fuels. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 8. Due to fairly constant rain and high temperatures, the vegetation in the rainforest is very dense. Which of the following is an adaptation that helps plants win the battle for sunlight on the forest floor? A) Vines that climb trees. B) Grasses that grow in clumps. C) Leaves that are needle-like. D) Trees that are cone-shaped. Show Answer Correct Answer: A) Vines that climb trees. 9. Which of the following is NOT an example of symbiosis A) Parasitism. B) Mutualism. C) Succession. D) Commensalism. Show Answer Correct Answer: C) Succession. 10. A type of symbiosis in which both species benefit is called ..... A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: A) Mutualism. 11. Ants live inside the acacia plant and in return defend the plant from herbivores. Which type of symbiotic relationship is this? A) Commensalism. B) Mutualism. C) Parasitism. D) Beneficialism. E) Communism. Show Answer Correct Answer: B) Mutualism. 12. Which of these is not part of the water cycle A) Evaporation. B) Condensation. C) Water fixation. D) Precipitation. Show Answer Correct Answer: C) Water fixation. 13. Charles wants to see if a solution called 'miracle grower' really affects plant growth. What is the dependent variable? A) The type of soil. B) Miracle grower. C) Height of the plant. D) The type of plant. Show Answer Correct Answer: C) Height of the plant. 14. Producers in the food chain include which of the following? A) Animal. B) Bacteria. C) Plant. D) Microorganism. Show Answer Correct Answer: C) Plant. 15. An organism that breaks down dead organisms and returns nutrients to the soil is called a(n). A) Herbivore. B) Omnivore. C) Carnivore. D) Decoposer. Show Answer Correct Answer: D) Decoposer. 16. Energy A) Ability to do work. B) Ability to study. C) Ability to exercise. D) None of above. Show Answer Correct Answer: A) Ability to do work. 17. Bear is ..... A) Herbivore. B) Carnivore. C) Omnivore. D) None of above. Show Answer Correct Answer: C) Omnivore. 18. If plants die. What will animals run out of? A) Carbon dioxide. B) Water. C) Oxygen. D) None of above. Show Answer Correct Answer: C) Oxygen. 19. An aquatic biome with a high amount of salt. It covers most of the surface of the earth. Which one is it? A) Ponds. B) Estuary. C) Marine. D) Fresh water. Show Answer Correct Answer: C) Marine. 20. Exotic or invasive species leads to all of these problems except A) Increased biodiversity. B) Loss of biodiversity. C) Disease. D) Loss of native species. Show Answer Correct Answer: A) Increased biodiversity. ← 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