This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 189 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 189 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which organism must obtain glucose by consuming other organism? A) Heterotrophs. B) Autotrophs. C) Producers. D) Decomposers. Show Answer Correct Answer: A) Heterotrophs. 2. Which statement describes a situation that would reduce the stability of a forest ecosystem? A) A fierce predator is removed from theecosystem. B) The number of producers remains constantin the ecosystem. C) Organisms frequently interact within theecosystem. D) The energy in the ecosystem flows from theSun. Show Answer Correct Answer: A) A fierce predator is removed from theecosystem. 3. Biotic factor A) Grass. B) Sun. C) Rocks. D) Water. Show Answer Correct Answer: A) Grass. 4. This happens when pollution moves up a food chain. A) Smelt. B) Over abundance of pollution. C) Biomagnification. D) The appocolypse. Show Answer Correct Answer: C) Biomagnification. 5. A species that has been moved to an area that impacts the local ecosystem. A) Producer. B) Native. C) Invasive. D) Consumer. Show Answer Correct Answer: C) Invasive. 6. An organism that consumes dead or decaying organisms for food is called a ..... A) Omnivore. B) Herbivore. C) Carnivore. D) Detrivorous. Show Answer Correct Answer: D) Detrivorous. 7. Sarah notices a ladybug on a flower. What could Sarah say about how the ladybug gets its energy? A) It gets energy from the air. B) It gets energy from the flower. C) It gets energy from soil. D) It gets energy from water. Show Answer Correct Answer: B) It gets energy from the flower. 8. A relationship were one organism benefits and the other is unaffected A) Mutualism. B) Predation. C) Commensalism. D) Competition. Show Answer Correct Answer: C) Commensalism. 9. Which of these factors affects food security? A) Increasing birth rates. B) Changing diets. C) Pests and pathogens. D) All of the above. Show Answer Correct Answer: D) All of the above. 10. The prefix a-means? A) Adjective former. B) Land, earth. C) Record, writing. D) Not, without, lacking, deficient. Show Answer Correct Answer: D) Not, without, lacking, deficient. 11. All the living thing and non-living features of an environment A) Biotic. B) Abiotic. C) Ecosystem. D) Habitat. Show Answer Correct Answer: C) Ecosystem. 12. An organism that must eat other organisms to receive its energy A) Heterotroph. B) Autotroph. Show Answer Correct Answer: A) Heterotroph. 13. Most of the energy that enters through organisms in a trophic level does not become biomass. Only energy used to make biomass remains available to the next level. only about ..... of energy entering one trophic level forms biomass in the next trophic level. A) 10%. B) 15%. C) 90%. D) 11%. Show Answer Correct Answer: A) 10%. 14. What is the ultimate energy source for living organisms? A) Energy stored in chemical bonds. B) The sun. C) Energy stored in cells. D) Nuclear power plants. Show Answer Correct Answer: B) The sun. 15. Why is a decaying log considered biotic? A) It is currently not living. B) It will eventually decay into soil. C) It was once living/made by something living. D) It provides nutrients for future plants. Show Answer Correct Answer: C) It was once living/made by something living. 16. How do rainforest animals use bright colors? A) To camouflage. B) To attract a mate. C) To warn that they are poisonous. D) All of the above. Show Answer Correct Answer: D) All of the above. 17. What do plants depend on from animals and humans? A) Energy for photosynthesis. B) Pest control. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: C) Carbon dioxide. 18. Which of the following organisms have the greatest amount of stored energy in the food web? A) Grass and Cactus. B) Hawk and Coyote. C) Grasshopper and Scorpion. D) None of above. Show Answer Correct Answer: A) Grass and Cactus. 19. How organisms depend on each other for food and energy; shows direction of energy flow. A) Food chain. B) Habitat. C) Luck. D) Predator/prey. Show Answer Correct Answer: A) Food chain. 20. The place where an organism lives and that provides the things the organism needs is called its ..... A) Ecosystem. B) Habitat. C) House. D) Community. Show Answer Correct Answer: B) Habitat. ← PreviousNext →Related QuizzesScience QuizzesEcology Quiz 1Ecology Quiz 2Ecology Quiz 3Ecology Quiz 4Ecology Quiz 5Ecology Quiz 6Ecology Quiz 7Ecology Quiz 8Ecology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books