This quiz works best with JavaScript enabled. Home > Science > Earth > 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. Examples of decomposers are ..... A) Plants. B) Animals. C) Bacteria and fungi. D) None of above. Show Answer Correct Answer: C) Bacteria and fungi. 2. Deciduous trees ..... their leaves in the fall. A) Shed. B) Grow. C) Restore. D) Increase. Show Answer Correct Answer: A) Shed. 3. 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. 4. 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. 5. 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. 6. 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. 7. 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. 8. 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. 9. 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. 10. 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. 11. 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. 12. 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. 13. 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. 14. 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. 15. Hey can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions. A) Generalist species. B) Specialist species. Show Answer Correct Answer: A) Generalist species. 16. The loss of a kind of living thing A) Extinction. B) Hibernation. C) Migration. D) Instinct. Show Answer Correct Answer: A) Extinction. 17. Birds eat insects off the skin of cows. If the relationship is a type of mutualism, then the organisms that will benefit are A) Only the cattle. B) Neither the birds or the cattle. C) Both the birds and the cattle. D) Only the birds. Show Answer Correct Answer: C) Both the birds and the cattle. 18. An omnivore is A) An organism that obtains energy by eating orangutangs. B) An organism that gets energy by eating sunshine. C) An organism that gets energy by eating both plans and animals. D) An organism that gets energy by eating plants. Show Answer Correct Answer: C) An organism that gets energy by eating both plans and animals. 19. Examples of decomposers include A) Vultures and raccoons. B) Earthworms, dung beetles, and spiders. Show Answer Correct Answer: B) Earthworms, dung beetles, and spiders. 20. Why are there so few aquatic plants & phytoplankton that live at the bottom zones in the ocean? A) The temperature in these zones is extremely low. B) Water is a limiting factor. C) The ocean floor contains many decomposers. D) Most sunlight is absorbed before reaching these levels. Show Answer Correct Answer: D) Most sunlight is absorbed before reaching these levels. ← 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