This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 201 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 201 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An example of an extreme environment would be: A) The sun. B) Deep sea vents. C) Sewer systems. D) The human stomach. Show Answer Correct Answer: B) Deep sea vents. 2. Place where an organism lives A) Hole. B) House. C) Prey. D) Habitat. Show Answer Correct Answer: D) Habitat. 3. What would you call an ecological symbiotic relationship that is helpful to both organisms involved? A) Commensalism. B) Niche. C) Mutualism. D) Habitat. E) Parasitism. Show Answer Correct Answer: C) Mutualism. 4. How does nitrogen become part of the food chain? A) Through transpiration by plants. B) Through uptake of nitrogen compounds in the soil by plants. C) Through factory emission and combustion of fossil fuels. D) Sunlight changes nitrogen into usable forms. Show Answer Correct Answer: B) Through uptake of nitrogen compounds in the soil by plants. 5. A density independent factor is ..... A) Where allele frequencies will always remain constant. B) Where the effect on a population will always be the same no matter the population size. C) Where the the effect something has on a population will be due to how many organisms are in the population. D) Where a population has reached its limit for the number of individuals the ecosystem can sustain. Show Answer Correct Answer: B) Where the effect on a population will always be the same no matter the population size. 6. What is an Abiotic example? A) Parrot. B) Precipitation. C) Trout. D) Grass. Show Answer Correct Answer: B) Precipitation. 7. Which food chain passes on the largest proportion of energy to humans? A) Beans $\longrightarrow$. B) Corn $\longrightarrow$ $\longrightarrow$. C) Plankton$\longrightarrow$ $\longrightarrow$. D) Seaweed$\longrightarrow$ $\longrightarrow$ $\longrightarrow$. Show Answer Correct Answer: A) Beans $\longrightarrow$. 8. When two or more organisms fight for resources it is called ..... A) Competition. B) Fighting. C) Prey. D) Parasitism. Show Answer Correct Answer: A) Competition. 9. Mistletoe grows on an oak tree in a forest ecosystem. The mistletoe gets all of its nutrients from the oak tree but the oak tree does not benefit. The mistletoe is a ..... A) Host. B) Producer. C) Consumer. D) Parasite. Show Answer Correct Answer: D) Parasite. 10. An environmental system made up of organisms interacting with one another and with nonliving factors to form a work unit. A) Food Chain. B) Hydrological System. C) Weathering. D) Ecosystem. Show Answer Correct Answer: D) Ecosystem. 11. The relationship between autotrophs and producers is A) That they are the same organisms. B) That autotrophs eat producers. Show Answer Correct Answer: A) That they are the same organisms. 12. An animal that is hunted and eaten for food is a A) Predator. B) Prey. Show Answer Correct Answer: B) Prey. 13. Earth is also known as a A) A gas giant. B) Fourth rock from the sun. C) A star. D) Biosphere. Show Answer Correct Answer: D) Biosphere. 14. Which feature of deforestation has the greatest effect on the atmosphere? A) Extinction of forest animal species. B) Soil erosion. C) Increased risk of flooding. D) Reduction of photosynthesis. Show Answer Correct Answer: D) Reduction of photosynthesis. 15. After land is cleared for farming, what type of succession might occur? A) Primary. B) Secondary. C) Tertiary. D) None of above. Show Answer Correct Answer: B) Secondary. 16. Population includes A) All the living things in an area. B) All the nonliving things in an area. C) All the organisms of the same species in an area. D) All the abiotic and biotic factors. Show Answer Correct Answer: C) All the organisms of the same species in an area. 17. On what continent are these savanna grasslands? A) North America. B) Asia. C) Africa. D) South America. Show Answer Correct Answer: C) Africa. 18. Nitrogen-fixing bacteria can be found A) On the leaves of legume plants. B) In the fruits of most plants. C) In the roots of legume plants. D) In the stems of legume plants. Show Answer Correct Answer: C) In the roots of legume plants. 19. As energy flows through an ecosystem, most energy is lost as heat. So, as energy moves from one level to the next it ..... A) Increases by 10%. B) Increases by 90%. C) Decreases by 10%. D) Decreases by 90%. Show Answer Correct Answer: D) Decreases by 90%. 20. ..... is the process in which water vapor changes to tiny droplets of liquid water. A) Condensation. B) Transpiration. Show Answer Correct Answer: A) Condensation. ← 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