This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 2 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Examples of biotic factors include: A) Air. B) Water. C) Grass. D) Sunlight. Show Answer Correct Answer: C) Grass. 2. A relationship where two organisms help each other and benefit? A) Parasitism. B) Mutualism. C) Commensalism. D) Predation. Show Answer Correct Answer: B) Mutualism. 3. What does reduce mean? A) Make bigger. B) Add things. C) Make smaller. D) Make different. Show Answer Correct Answer: C) Make smaller. 4. The natural ecosystem is not ..... A) Lake. B) Field. C) Forest. D) Savanna. Show Answer Correct Answer: B) Field. 5. What are biotic factors? A) Factors that are living. B) Factors that are non-living. C) Factors that affect animals. D) Factors that affect plants. Show Answer Correct Answer: A) Factors that are living. 6. Which is the smallest level of an ecosystem? A) Organsism. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: A) Organsism. 7. When you need to wipe your mouth, what is the best option in order to protect the environment? A) Use cloth napkin. B) Use paper towel. C) Use toilet paper. D) None of above. Show Answer Correct Answer: A) Use cloth napkin. 8. A lion kills and eats a zebra. This is an example of A) Symbiosis. B) Competition. C) Predation. D) None of above. Show Answer Correct Answer: C) Predation. 9. What is at the top of the food chain? A) Primary producers. B) Primary consumers. C) Secondary consumers. D) Tertiary consumers. Show Answer Correct Answer: D) Tertiary consumers. 10. True or False:Clouds form during condensation. A) True. B) False. Show Answer Correct Answer: A) True. 11. In the water cycle, what is evaporation through plants called? A) Evaporation. B) Condensation. C) Infiltration. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 12. Organisms that break down dead plants and animals to return useful minerals to the soil. A) Omnivores. B) Herbivores. C) Carnivores. D) Decomposers. Show Answer Correct Answer: D) Decomposers. 13. ..... is a relationship between organisms that strive for the same limited resources A) Predation. B) Competition. C) Carrying capacity. D) Parasitism. Show Answer Correct Answer: B) Competition. 14. A climax community is A) When primary succession begins. B) When herbivores first come into an ecosystem. C) When secondary succession begins. D) When an ecosystem has completed secondary succession and has become a mature community with large tree and predators. Show Answer Correct Answer: D) When an ecosystem has completed secondary succession and has become a mature community with large tree and predators. 15. Why does photosynthesis not occur in the deep ocean? A) There is no oxygen. B) There is no sunlight. C) There are no nutrients. D) There is too much sunlight. Show Answer Correct Answer: B) There is no sunlight. 16. If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population? A) It will increase. B) It will decrease. C) It will stay the same. D) It will fluctuate. Show Answer Correct Answer: A) It will increase. 17. Which one is NOT an abiotic factor? A) Rock. B) Soil. C) Plant. D) Sunlight. Show Answer Correct Answer: C) Plant. 18. What would be an example of a producer? A) Plants. B) Mushrooms. C) Tigers. D) Humans. Show Answer Correct Answer: A) Plants. 19. Which trophic level gets the most energy? A) Trophies level. B) Tertiary consumer. C) Producer. D) Primary consumer. Show Answer Correct Answer: C) Producer. 20. A community is different from a population by having what? A) Communities have biotic and abiotic factors. B) Communities have one species living together. C) Communities have many different species living together. D) Community begins with one individual. Show Answer Correct Answer: C) Communities have many different species living together. ← PreviousNext →Related QuizzesScience QuizzesEcology Quiz 1Ecology 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