This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 148 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 148 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Carbon is recycled mostly through A) Transpiration. B) Photosynthesis and respiration. C) Condensation. D) Mountain formation. Show Answer Correct Answer: B) Photosynthesis and respiration. 2. A producer always A) Eats other producers. B) Gets energy from the sun. C) Is a herbivore. D) Is a plant. Show Answer Correct Answer: B) Gets energy from the sun. 3. Which organism would usually be in the fourth trophic level? A) Humans. B) Rabbits. Show Answer Correct Answer: A) Humans. 4. Animals that feed exclusively on herbivores are known as A) Primary consumers. B) Carnivores. C) Omnivores. D) Producers. Show Answer Correct Answer: B) Carnivores. 5. The main cause of the increase in the amount of CO2 (carbon dioxide) in Earth's atmosphere over the past 150 years is ..... A) The burning of larger amounts of wood & fossil fuels. B) Increased worldwide disease. C) Animal respiration. D) An increase in the amount of plants. Show Answer Correct Answer: A) The burning of larger amounts of wood & fossil fuels. 6. Salinity refers to A) How many plants are in the water. B) How many organisms live in the water. C) How much salt in is water. D) None of above. Show Answer Correct Answer: C) How much salt in is water. 7. Abiotic means ..... A) Living. B) Squirrels. C) Nonliving. D) Adaptations. Show Answer Correct Answer: C) Nonliving. 8. The process of adjusting behavior, or body in order to be more suited to an environment. A) Adaptation. B) Biodiversity. C) Nitrogen Fixation. D) Mimicry. Show Answer Correct Answer: A) Adaptation. 9. True or False:Limiting factors can be population dependent and population independent. A) True-T. B) False-F. Show Answer Correct Answer: A) True-T. 10. Which breaks down dead organic materials? A) Carnivore. B) Decomposer/Detritivore. C) Herbivore. D) Omnivore. Show Answer Correct Answer: B) Decomposer/Detritivore. 11. A living or once-living organism in its environment is known as what? A) Population. B) Biotic factor. C) Abiotic factor. D) Freshwater. Show Answer Correct Answer: B) Biotic factor. 12. A producer is a living thing that makes its own food from sunlight, air, and soil. A) True. B) False. Show Answer Correct Answer: A) True. 13. Makes oxygen plants and animals need A) Producer. B) Consumer. C) Decoposer. D) None of above. Show Answer Correct Answer: A) Producer. 14. What type of symbiosis? *The Cattle Egret forages in pastures and fields among livestock such as cattle and horses feeding on the insects stirred up by the movement of the grazing animals. *The cows and horses are not bothered by the cattle egrets. A) Commensalism. B) Mutualism. C) Parasitism. D) Predation. Show Answer Correct Answer: A) Commensalism. 15. The ability to conserve water is an important adaptation in which biome? A) Coniferous Forest. B) Deciduous Forest. C) Desert. D) Tundra. Show Answer Correct Answer: C) Desert. 16. What % of the air is made of nitrogen? A) 21%. B) 52%. C) 61%. D) 78%. Show Answer Correct Answer: D) 78%. 17. Why don't populations grow indefinitely? A) Limiting factors. B) Only biotic factors. C) Only abiotic factors. D) None of the above. Show Answer Correct Answer: A) Limiting factors. 18. Living A) Biotic. B) Abiotic. Show Answer Correct Answer: A) Biotic. 19. What animal from the list below lives in the arctic ecosystem? A) Lion. B) Whale. C) Polar bear. D) Goose. Show Answer Correct Answer: C) Polar bear. 20. This level focuses on all the biotic components in an ecosystem A) Organism. B) Population. C) Biome. D) Community. Show Answer Correct Answer: D) Community. ← 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