This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 167 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 167 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A relationship where both organisms benefit. cow and egret. A) Symbiosis. B) Commensalism. C) Mutualism. D) Niche. Show Answer Correct Answer: C) Mutualism. 2. Which of the following is NOT a limiting factor? A) Increase in predators. B) Food shortage. C) Natural Disasters. D) Symbiosis. Show Answer Correct Answer: D) Symbiosis. 3. A stick A) Biotic. B) Abiotic. Show Answer Correct Answer: A) Biotic. 4. The first organism in a food chain is called the A) Predator. B) Consumer. C) Herbivore. D) Producer. Show Answer Correct Answer: D) Producer. 5. An organism that has an unusually large effect on an ecosystem is called a(n) A) Keystone species. B) Omnivore. C) Biotic factor. D) Heterotroph. Show Answer Correct Answer: A) Keystone species. 6. Scientists use a model called a ..... to show the amount of energy that is available in each step of a food chain. A) Energy pyramid. B) Food web. Show Answer Correct Answer: A) Energy pyramid. 7. A certain fungus can be harmful when it infects the outermost layers of the human foot, while another type of fungus can be beneficial when it recycles nutrients by breaking down dead organisms. Which terms identify these two roles of fungi? A) Producer, prey. B) Host, autotroph. C) Parasite, decomposer. D) Herbivore, predator. Show Answer Correct Answer: C) Parasite, decomposer. 8. This entity will be the first one to colonize a bare rock A) Herbs and shrubs. B) Annual plants. C) Lichens. D) Perennial plants. Show Answer Correct Answer: C) Lichens. 9. Large-scale deforestation in tropical areas has occurred to: A) A Provide land for sunbathing and tourism. B) B Provide land for house building. C) C Provide land for cattle and rice fields. D) D Provide wood for burning in wood-fired stoves. Show Answer Correct Answer: C) C Provide land for cattle and rice fields. 10. Flea on a cat A) Competition. B) Parasitism. C) Mutualism. D) Predication. Show Answer Correct Answer: B) Parasitism. 11. What is the process in the nitrogen cycle that returns nitrogen back into the atmosphere? A) Ammonification. B) Nitrification. C) Nitrogen-fixing. D) Denitrification. Show Answer Correct Answer: D) Denitrification. 12. A ..... is all the living and nonliving things around you. A) Ecosystem. B) Community. C) Environment. D) Population. Show Answer Correct Answer: A) Ecosystem. 13. ..... is a group of the same species in a community. A) Habitat. B) Niche. C) Population. D) Community. Show Answer Correct Answer: C) Population. 14. A limitation of biological pyramids is that organisms have to be A) Kept alive for the study. B) Killed in order to obtain data. C) Identified by international experts. D) Observed for long periods of time in their natural habitats. Show Answer Correct Answer: D) Observed for long periods of time in their natural habitats. 15. When BOTH species/organisms BENEFIT from the relationship (bees and flower) A) Mutualism. B) Commensalism. C) Parasitism. D) Predation. Show Answer Correct Answer: A) Mutualism. 16. A remora eats food debris left over by a turtle. The turtle is not affected in anyway, but the remora gets a free meal. A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: B) Commensalism. 17. If one group of organisms is destroyed in a food web, it is possible that the whole food web will be affected. A) True. B) False. Show Answer Correct Answer: A) True. 18. Because increased carbon in the atmosphere traps heat in Earth's atmosphere, what is the name of the process that is intensified? A) Photosynthesis. B) Greenhouse effect. C) Respiration. D) Transpiration. Show Answer Correct Answer: B) Greenhouse effect. 19. The process by which certain animals form strong attachments during an early-life critical period. A) Migration. B) Imprinting. C) Stimulus. D) Dominance. Show Answer Correct Answer: B) Imprinting. 20. An organism that makes its own food A) Consumer. B) Producer. C) Predator. D) Prey. Show Answer Correct Answer: B) Producer. ← 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