This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 116 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 116 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Affects the amount of water that can be absorbed and used by plants and animals. A) Soil profile. B) Soli composition. C) Particle size. D) None of above. Show Answer Correct Answer: C) Particle size. 2. Carbon dioxide is removed from the atmosphere by A) Combustion. B) Decomposition. C) Photosynthesis. D) Respiration. Show Answer Correct Answer: C) Photosynthesis. 3. Population density is A) The number of people in your house. B) The number of people in a school. C) The number of individuals per unit of area. D) The number of individuals in a mile. Show Answer Correct Answer: C) The number of individuals per unit of area. 4. What best describes the relationship between bees and flowering plants. A) Mutualism. B) Parasitism. C) Neutralism. D) Commensalism. Show Answer Correct Answer: A) Mutualism. 5. Anything that can decrease the size of a population including living (biotic) and non living (abiotic) features of an ecosystem such as predators and drought. A) Limiting factor. B) Habitat. C) Ecosystem. D) Carrying capacity. Show Answer Correct Answer: A) Limiting factor. 6. The process of natural selection leads to genetic change in a population.Which factor causes the population to change in natural selection? A) Environmental conditions or challenges. B) Individual choice. C) Human intervention. D) Migration over long distances. Show Answer Correct Answer: A) Environmental conditions or challenges. 7. Which are examples of consumers? A) Grass and cows. B) Turtles and seaweed. C) Owls and bears. D) Sun and mushrooms. Show Answer Correct Answer: C) Owls and bears. 8. Which of the following is a density-independent limiting factor? A) Disease. B) Emigration. C) Earthquake. D) Parasitism. Show Answer Correct Answer: C) Earthquake. 9. Living and non-living things in an area A) Biome. B) Ecosystem. C) Community. D) None of above. Show Answer Correct Answer: B) Ecosystem. 10. Producers are the ..... A) Top of the food chain. B) Second link in any food chain. C) First link in any food chain. D) None of above. Show Answer Correct Answer: C) First link in any food chain. 11. Climax stage of ecological succession is indicated that: A) Stable Community. B) Pioneer Community. C) Developing Community. D) Nudation. Show Answer Correct Answer: A) Stable Community. 12. The term biomass refers to the total A) Dry mass of the organisms in a given area. B) Unused material excreted as waste. C) Producer-to-consumer ratio. D) Mass of all living things on Earth. Show Answer Correct Answer: A) Dry mass of the organisms in a given area. 13. Feeding positions in a food chain or web A) Niche. B) Trophic level. Show Answer Correct Answer: B) Trophic level. 14. An organism that obtains energy by eating only plants A) Carnivore. B) Herbivore. C) Omnivore. D) Plant. Show Answer Correct Answer: B) Herbivore. 15. What kind of factor:flood? A) Density-independent. B) Density-dependent. Show Answer Correct Answer: A) Density-independent. 16. Where an organism lives and all aspects of the environment. A) Habitat. B) Niche. C) Population. D) Biosphere. Show Answer Correct Answer: A) Habitat. 17. What is the range of physical and biological conditions in which species lives and the way the species obtain what is needed A) Adaptation. B) Competition. C) Niche. D) Resources. Show Answer Correct Answer: C) Niche. 18. What is the name of air pollution over a city? A) Smoke. B) Car exhaust. C) Smog. D) None of above. Show Answer Correct Answer: C) Smog. 19. Which of the following is NOT carried out by microorganisms in the nitrogen cycle? A) Nitrification. B) Denitrification. C) Nitrogen fixation. D) Absorption of nitrates. Show Answer Correct Answer: D) Absorption of nitrates. 20. A Remora fish swimming under a shark is an example of A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: B) Commensalism. ← 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