This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 128 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 128 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What trophic level contains more organisms than any other level A) Primary producers. B) Primary consumers. C) Secondary autotrophs. D) None of above. Show Answer Correct Answer: A) Primary producers. 2. Alice is taking a test in which she has to define"commensalism" . She gets this word confused with "communism" . Please correct her mistake. A) Commensalism means a relationship in which one benefits and the other neither suffers nor benefits. B) This sounds like a math question . C) Communism is what Russia does. D) Commensalism is where both are harmed. Show Answer Correct Answer: A) Commensalism means a relationship in which one benefits and the other neither suffers nor benefits. 3. Which option is abiotic? A) Plants. B) Bacteria. C) Water. D) Fungi. Show Answer Correct Answer: C) Water. 4. Water and sunlight A) Hey. B) Biotic. C) Abiotic. D) None of above. Show Answer Correct Answer: C) Abiotic. 5. Limiting factors ..... A) Are resources that are in short supply and limit the size of a population. B) Are a cause of too much nitrogen in the water. C) Are hosts for parasites. D) Only found in the jungle. Show Answer Correct Answer: A) Are resources that are in short supply and limit the size of a population. 6. What percentage of energy is passed on to the next trophic level? A) 5%. B) 10%. C) 50%. D) 90%. Show Answer Correct Answer: B) 10%. 7. Which would NOT be a correct term to describe Simba (a lion) from the Lion King A) Consumer. B) Producer. C) Predator. D) Apex predator. Show Answer Correct Answer: B) Producer. 8. Why is a mushroom considered a heterotroph? A) It makes food through chemosynthesis. B) It makes food through photosynthesis. C) It obtains nutrients from its environment. D) None of above. Show Answer Correct Answer: C) It obtains nutrients from its environment. 9. Oxpeckers are birds that sit on zebras and rhinos and eat ticks and other parasites that live on their skin. The oxpeckers get food and in return the zebras and rhinos get pest control. When there is danger, the oxpeckers fly upward and scream a warning to help the zebras and rhinos. Which of the following correctly identifies the symbiotic relationship between the oxpeckers and the zebras? A) Parasitism. B) Commensalism. C) Mutualism. D) Competition. Show Answer Correct Answer: C) Mutualism. 10. A top predator such as a shark has a job to keep smaller fish populations under control. The role the shark plays on the reef is called its ..... A) Habitat. B) Trophic level. C) Competition. D) Ecological niche. Show Answer Correct Answer: D) Ecological niche. 11. Define population A) Place whereAn organism live. B) Role of an organism. C) A group of same species living at a particular geographical area. D) A population of different species living together in the same area. Show Answer Correct Answer: C) A group of same species living at a particular geographical area. 12. What is the major difference between a community and an ecosystem? A) A community involves only the biotic, not the abiotic. B) An ecosystem only includes herbivores and carnivores no decomposers. C) An ecosystem involves only the biotic, AND THE abiotic. D) An ecosystem is just a larger community. Show Answer Correct Answer: C) An ecosystem involves only the biotic, AND THE abiotic. 13. Which is a first level consumer? A) A wolf. B) A hawk. C) A carrot. D) A rabbit. Show Answer Correct Answer: D) A rabbit. 14. Biomes may be terrestrial, aquatic, or atmospheric. A) True. B) False. Show Answer Correct Answer: B) False. 15. The conversion of atmospheric nitrogen into a form that can be used by plants and other organisms A) Nitrogen Fixation. B) Nitrogen Succession. C) Secondary Succession. D) Photosynthesis. Show Answer Correct Answer: A) Nitrogen Fixation. 16. Since lynx prey on hares, an increase in the hare population causes an increase in the lynx population. A) Density-Dependent:Competition. B) Density-Independent:Competition. C) Density-Dependent:Predator-Prey. D) Density-Independent:Predator-Prey. Show Answer Correct Answer: C) Density-Dependent:Predator-Prey. 17. Factors like predation can have a positive benefit to the population of prey organisms because predators tend to keep prey populations below their ..... A) Carrying capacity. B) Sustainibility number. C) Exponential growth point. D) Competition level. Show Answer Correct Answer: A) Carrying capacity. 18. What is the difference between a terrestrial ecosystem and an aquatic one? A) Terrestrial ecosystems are on land, and aquatic ecosystems are in water. B) Terrestrial ecosystems are very dry, and aquatic ecosystems have a lot of rain. C) Terrestrial ecosystems are on land, and aquatic ecosystems are in the ocean. D) Terrestrial ecosystems have no deep water in them, and aquatic ecosystems are found at the bottom of a deep lake or ocean. Show Answer Correct Answer: A) Terrestrial ecosystems are on land, and aquatic ecosystems are in water. 19. Which one is a scavenger? A) Sea anemone. B) Bear. C) Shark. D) Vulture. Show Answer Correct Answer: D) Vulture. 20. No two species can occupy the same niche A) Competitive Exclusion Principle. B) Limiting Exclusion Theory. C) Competitive Limiting Principle. D) Limiting Competitive Theory. Show Answer Correct Answer: A) Competitive Exclusion Principle. ← 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