This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 64 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 64 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A certain species of bird follows cows through a pasture and eats insects that cows stir up. The cows are not affected. Which type of symbiotic relationship is described? A) Commensalism. B) Parasitism. C) Mutualism. D) Predation. Show Answer Correct Answer: A) Commensalism. 2. Omnivores are..... A) Consumers that eat both plants and animals. B) Species that break down waste material and dead animals to store energy. C) Animals that eat only plants. D) Animals that eat only animals. Show Answer Correct Answer: A) Consumers that eat both plants and animals. 3. What kind of factor:disease? A) Density-independent. B) Density-dependent. Show Answer Correct Answer: B) Density-dependent. 4. What do the arrows in a food chain or web represents? A) They point away from the organism that is being eaten. B) They show how carbon flows within an ecosystem. C) They show what direction the energy is flowing between organisms. D) They represent how water is transferred within a habitat. Show Answer Correct Answer: C) They show what direction the energy is flowing between organisms. 5. Green plants are called ..... A) Producers. B) Consumers. C) Herbivores. D) Omnivores. Show Answer Correct Answer: A) Producers. 6. What are the two factors that determine an areas climate? A) Elevation and precipitation. B) Precipitation and temperature. C) Latitude and topography. D) Topography and temperature. Show Answer Correct Answer: B) Precipitation and temperature. 7. This is the formula for which process? 6H2O + 6CO2 $\rightarrow$ C6H12O6 + 6O2 A) Photosynthesis. B) Glycolysis. C) Cellular Respiration. D) Acidification. Show Answer Correct Answer: A) Photosynthesis. 8. What is common between the process of respiration and the process of burning fuel is that in both A) .There is a constant need for oxygen for the process to occur. B) Methane is released. C) Ignition is needed. D) It produces energy from organic compounds. Show Answer Correct Answer: A) .There is a constant need for oxygen for the process to occur. 9. When an organism dies, the nitrogen in its body A) Can never be reused by other living things. B) Is immediately released into the atmosphere. C) Is released by the action of decomposers. D) None of the above. Show Answer Correct Answer: C) Is released by the action of decomposers. 10. Decomposers ..... A) Recycle nutrients in the ecosystem. B) Provide most of the Earth's energy. C) Can be considered producers because they grow in the ground. D) Are mostly Abiotic. Show Answer Correct Answer: A) Recycle nutrients in the ecosystem. 11. The temperate decisuous forest, the tropical rain forest, the desert, and the tundra are all examples of ..... A) The biopshere. B) Biomes. C) Ecosystems. D) Communities. Show Answer Correct Answer: B) Biomes. 12. Which of the following is an example of a limiting factor? A) TEMPERATURE. B) AMOUNT OF FOOD. C) DISEASE. D) ALL THE ABOVE. Show Answer Correct Answer: D) ALL THE ABOVE. 13. Which is NOT an autotroph A) Tree. B) Plant. C) Mushroom. D) None of above. Show Answer Correct Answer: C) Mushroom. 14. This is a geographic area where plants, animals, and other organisms work together to form a bubble of life. A) Ecosystem. B) Biotic. C) Landfill. D) None of above. Show Answer Correct Answer: A) Ecosystem. 15. Which biome is characterized by well defined seasons and trees that lose their leaves in their winter? A) Deciduous forests. B) Taiga. C) Tropical rainforests. D) Savannah. E) Tundra. Show Answer Correct Answer: A) Deciduous forests. 16. Keystone species is A) A species that lives at the Keystone ski resort in Colorado. B) A species that, if removed will cause a trophic cascade and disrupt the ecosystem. C) A species that saves the environment. D) None of above. Show Answer Correct Answer: B) A species that, if removed will cause a trophic cascade and disrupt the ecosystem. 17. What do we call a type of consumer that only eats the remains of dead organisms? A) Consumer. B) Third level consumer. C) Scavenger. D) Omnivore. Show Answer Correct Answer: C) Scavenger. 18. What is the most widely used renewable source of electricity in the US today? A) Hydroelectric. B) Solar. C) Biomass fuels. D) Tidal power. Show Answer Correct Answer: A) Hydroelectric. 19. All the individuals of the same species in a certain area are termed a(n) A) Species. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: B) Population. 20. Kai, Lily, and Abigail are studying different levels of ecological organization. They came across the terms Individual, Population, Ecosystem, and Niche. They are confused about which one is not a hierarchy of ecological organization. Can you help them? A) Individual. B) Population. C) Ecosystem. D) Niche. Show Answer Correct Answer: D) Niche. ← 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