This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 197 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 197 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is the smallest level of organization? A) Biosphere. B) Biome. C) Species. D) Population. Show Answer Correct Answer: C) Species. 2. A wrasse fish feeds on the parasites found on the black sea bass's body. Both species benefit. A) Mutualism. B) Parasitism. C) Commensalism. D) None of above. Show Answer Correct Answer: A) Mutualism. 3. True or False:Runoff is water that is absorbed by the ground. A) True. B) False. Show Answer Correct Answer: B) False. 4. Which kind of fossil fuel formed in swamps from once living plants? A) Oil. B) Natural gas. C) Petroleum. D) Coal. Show Answer Correct Answer: D) Coal. 5. (Birth + Immigration)-(Death + Emigration) = A) Logistic. B) The developmental quotient. C) Exponential. D) Population size. Show Answer Correct Answer: D) Population size. 6. Temperature, light, air, water, and soil are all ..... or non-living parts of the environment A) Alive. B) Biotic. C) Abiotic. D) Living. Show Answer Correct Answer: C) Abiotic. 7. Decomposers help to ..... A) Create music. B) Find food. C) Break down decaying matter. D) The Sun. Show Answer Correct Answer: C) Break down decaying matter. 8. Which of the following is NOT a herbivore A) Antelope. B) Zebra. C) Lion. D) None of above. Show Answer Correct Answer: C) Lion. 9. What is the source of all energy? A) Producers. B) Sun. C) Consumers. D) Decomposers. Show Answer Correct Answer: B) Sun. 10. A lion eats a gazelle except horns, hooves, and hair. Lion spends energy getting to the gazelle's food parts. A) Example of energy transfer. B) Example of biomass. C) Example of trophic level. D) None of above. Show Answer Correct Answer: A) Example of energy transfer. 11. What do the arrows in a food chain/web represent? A) What eats what. B) The flow of energy. C) That plants produce their own food. D) How the carnivores eat meat. Show Answer Correct Answer: B) The flow of energy. 12. Building proteins and DNA is the reason organisms need what substance? A) Water. B) Carbon. C) Nitrogen. D) Calcium. Show Answer Correct Answer: C) Nitrogen. 13. Earth cools. Cooler temps make more snow. Snow reflects light, preventing heating. Earth gets cooler. More snow falls and reflects more light. This is an example of: A) Validity. B) Greenhouse effect. C) Negative feedback. D) Carrying capacity. E) Positive feedback. Show Answer Correct Answer: E) Positive feedback. 14. Which term define:The transfer of food energy from primary producer through primary consumer to carnivores and finally to decomposer A) Food chain. B) Food web. C) Trophic level. D) Ecological pyramid. Show Answer Correct Answer: A) Food chain. 15. A bird eating ticks off of a cows back A) Mutualism. B) Commensalism. C) Parasitism. D) Vaderism. Show Answer Correct Answer: A) Mutualism. 16. Why does biodiversity increase during the course of succession? A) Biodiversity refers to the difference in ages of organisms, so some organisms arrive earlier than others. B) Over time, the same trees begin to reproduce and take over an area. C) Many populations of organisms gradually begin to occupy the same area to create a climax community. D) Many organisms move in to the area for a short amount of time, then leave to find a better habitat. Show Answer Correct Answer: C) Many populations of organisms gradually begin to occupy the same area to create a climax community. 17. At carrying capacity, a population ..... A) Increases rapidly. B) Increases slowly. C) Decreases slowly. D) Remains stable (at equilibrium). Show Answer Correct Answer: D) Remains stable (at equilibrium). 18. If a population of a gazelle were to decrease, the population of cheetahs will ..... A) Decrease. B) Increase. C) Stay the same. D) Cheetahs don't eat gazelle. Show Answer Correct Answer: A) Decrease. 19. Cold, dry, treeless region sometimes called a cold desert ..... has permafrost. A) Tundra. B) Taiga. C) Desert. D) Forest. Show Answer Correct Answer: A) Tundra. 20. Food chains show the transfer of ..... in an ecosystem A) Energy. B) Sun. C) Heat. D) Organisms. Show Answer Correct Answer: A) Energy. ← 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