This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 17 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are limiting factors A) An environmental factor that causes a population to increase. B) An environmental factor that causes a population to decrease. C) An environmental factor that causes animals to die. D) An environmental factor that occurs only in mars. Show Answer Correct Answer: B) An environmental factor that causes a population to decrease. 2. ..... ! Listen to the teacher. A) Be quiet!. B) Talk. C) Sing. D) Wait. Show Answer Correct Answer: A) Be quiet!. 3. In the exponential model of population growth, where dN/dt = rN, what is occurring to the population at the following r values?r<0 A) Population is declining. B) Population is growing. C) No population growth. D) None of above. Show Answer Correct Answer: A) Population is declining. 4. Which biome is a treeless biome in the far north with harsh, cold winters and extremely short summers A) Tundra. B) Desert. C) Temperate deciduous forest. D) Tropical rain forest. Show Answer Correct Answer: A) Tundra. 5. Deforestation causes an increase in atmospheric carbon dioxide A) True. B) False. Show Answer Correct Answer: A) True. 6. Biomass increases at the upper levels of a food chain. A) True. B) False. Show Answer Correct Answer: B) False. 7. Examples of decomposers are ..... A) Plants. B) Animals. C) Bacteria and fungi. D) None of above. Show Answer Correct Answer: C) Bacteria and fungi. 8. Deciduous trees ..... their leaves in the fall. A) Shed. B) Grow. C) Restore. D) Increase. Show Answer Correct Answer: A) Shed. 9. Willow trees get their energy from the sun. Willow trees are ..... A) Producers. B) Consumers. C) Decomposers. D) Herbivores. Show Answer Correct Answer: A) Producers. 10. Soil organisms, such as fungi, worms & bacteria are all parts of a woodland ecosystem. What best describes the role of these organisms in the woodland ecosystem? A) To break down the remains of other living things. B) To provide oxygen to animals. C) To obtain dissolved oxygen from moisture. D) To store chlorophyll for photosynthesis. Show Answer Correct Answer: A) To break down the remains of other living things. 11. Why is solar energy not a reliable source of energy? A) The sun might run out. B) The sun is not hot enough. C) The sun does not shine every day or at night. D) The sun is nonrenewable. Show Answer Correct Answer: C) The sun does not shine every day or at night. 12. An endangered species is one that is ..... A) A species that is in danger of going extinct. B) A species that has gone extinct. C) A species that is bred in captivity. D) The most important species in an ecosystem. Show Answer Correct Answer: A) A species that is in danger of going extinct. 13. Why is wind considered abiotic? A) It isn't made by a living organism, it is not living, and never lived. B) It has a mind of its own. C) It can affect the temperature of an area. D) It can damage trees and other parts of the ecosystem. Show Answer Correct Answer: A) It isn't made by a living organism, it is not living, and never lived. 14. How does the temperature of ocean water change as it gets deeper? A) It gets warmer. B) It gets colder. C) It stays the same. D) It gets colder and then warmer. Show Answer Correct Answer: B) It gets colder. 15. Occurs when population slows or stops following a period of exponential growth. A) No growth. B) Population growth. C) Logistic growth. D) Exponential growth. Show Answer Correct Answer: C) Logistic growth. 16. As toxins travel up the food chain, they become more concentrated in higher level consumers. This is known as: A) Parasitism. B) Predation. C) Biodiversity. D) Biomagnification. Show Answer Correct Answer: D) Biomagnification. 17. What is the major source of phosphorus on land? A) Deposition from atmospheric phosporus. B) Compounds that are formed by autotrophs during photosynthesis. C) Compounds released from the weathering of rocks. D) Compounds formed from bacterial conversion. Show Answer Correct Answer: C) Compounds released from the weathering of rocks. 18. Biased sampling is A) When you choose a population that is more likely to give you the result you want. B) When you choose a group that is equally likely to be chosen. Show Answer Correct Answer: A) When you choose a population that is more likely to give you the result you want. 19. A model that shows many different feeding relationships A) Menu. B) Food web. C) Food diagram. D) Web cycle. Show Answer Correct Answer: B) Food web. 20. What factors define aquatic ecosystems? A) Salinity. B) Depth and concentrations of dissolved nutrients. C) Temperature and flow rate. D) All of above. Show Answer Correct Answer: D) All of above. ← 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