This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 229 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 229 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a "primary energy source" ? A) Grass. B) Bacteria. C) Sun. D) Soil. Show Answer Correct Answer: C) Sun. 2. Unleaded petrol A) Unleaded gasoline. B) Ethanol. C) Alcohol. D) Monohydric alcohol. Show Answer Correct Answer: A) Unleaded gasoline. 3. All of the populations in an ecosystem. All snakes, rats, and alligators in an area. A) Community. B) Producer. C) Population. D) Symbiosis. Show Answer Correct Answer: A) Community. 4. Bears eat both plants and meat. They are considered to be A) Herbivores. B) Carnivores. C) Omnivores. D) Scavengers. Show Answer Correct Answer: C) Omnivores. 5. What term best relates to equilibrium? A) Pioneer species. B) Primary succession. C) Secondary succession. D) Climax community. Show Answer Correct Answer: D) Climax community. 6. What happens to energy as you go up an energy pyramid? A) There is more energy as you go up. B) There is less energy as you go up. C) The amount of energy remains the same as you go up. D) The amount of energy varies. Show Answer Correct Answer: B) There is less energy as you go up. 7. A hollow, sealed glass sphere contains sand, water, air, algae, and tiny brine shrimp. The sphere is a model ecosystem. Which of these is a biotic factor of this ecosystem? A) Air. B) Algae. C) Sand. D) Water. Show Answer Correct Answer: B) Algae. 8. Which of the following is the correct order of ecological succession? A) Grass-shrubs-lichens-trees. B) Lichens-shrubs-grasses-trees. C) Lichens-grasses-shrubs-trees. D) Grasses-lichens-shrubs-trees. Show Answer Correct Answer: C) Lichens-grasses-shrubs-trees. 9. Eukaryotes include animal cells and plant cells? True or False? A) True. B) False. Show Answer Correct Answer: A) True. 10. What process is occurring when an autotroph is using chemical energy to produce sugars? A) Photosynthesis. B) Chemosynthesis. Show Answer Correct Answer: B) Chemosynthesis. 11. A species that is NOT native to a particular region is called A) Natural. B) Exotic. C) Endemic. D) Extraordinary. Show Answer Correct Answer: B) Exotic. 12. Is a rock considered abiotic or biotic? A) Abiotic. B) Biotic. C) Neither. D) None of above. Show Answer Correct Answer: A) Abiotic. 13. Which of the following is a density-dependent limiting factor? A) Human activities. B) Unusual weather. C) Competition. D) Natural disaster. Show Answer Correct Answer: C) Competition. 14. Eats both animals and plants A) Carnivore. B) Herbivore. C) Omnivore. D) Decoposer. Show Answer Correct Answer: C) Omnivore. 15. Which of the following is NOT a characteristic of a stable ecosystem. A) Major increase in population. B) Constant rate of energy flow. C) Resources that change at a predicable rate. D) All of the above. Show Answer Correct Answer: A) Major increase in population. 16. A tick on a cows back A) Mutualism. B) Commensalism. C) Parasitism. D) Vaderism. Show Answer Correct Answer: C) Parasitism. 17. Which statement best describes a trophic level? A) A trophic level is the position of an organism in an ecosystem. B) A trophic level is the feeding position of an organism in a food chain or web. Show Answer Correct Answer: B) A trophic level is the feeding position of an organism in a food chain or web. 18. The rocks that make up Earth are part which sphere? A) Cryosphere. B) Geosphere. C) Biosphere. D) Hydrosphere. Show Answer Correct Answer: B) Geosphere. 19. Which group of organisms performs photosynthesis? A) Autotrophs. B) Scavengers. C) Heterotrophs. D) Consumers. Show Answer Correct Answer: A) Autotrophs. 20. What are the factors related to ecosystems? A) Biological factors, chemical factors. B) Biological factors, physical factors. C) Physical factors, chemical factors. D) Chemical factors, other factors. Show Answer Correct Answer: B) Biological factors, physical factors. ← 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