This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 271 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 271 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. By looking at the skull of a mammal you can tell if the animal is a(n) A) Organism. B) Carnivore, herbivore or omnivore. C) Biotic or abiotic. D) Incisors, molars, premolars. Show Answer Correct Answer: B) Carnivore, herbivore or omnivore. 2. It is raining outside right now. A) Weather. B) Climate. Show Answer Correct Answer: A) Weather. 3. Which of the following is the sum of all living organisms on Earth? A) Community. B) Biosphere. C) Food web. D) Population. Show Answer Correct Answer: B) Biosphere. 4. Sustainable means A) Using a lot of energy. B) Being able to last for a long time by creating as much as you use. C) Being able to cause a stain. D) None of above. Show Answer Correct Answer: B) Being able to last for a long time by creating as much as you use. 5. The greater the biodiversity is, the ..... sustainable an ecosystem is. A) Less. B) Equal. C) More. D) None of above. Show Answer Correct Answer: C) More. 6. As it grows from a seed to a mature plant, aplant will grow taller and thicker. which are abiotic factors most responcible for the increase in the mass of the plant A) Water, sunlight, carbon dioxide. B) Minerals, water, plant enzymes. C) Sunlight, oxygen, plant receptors. D) Water, minerals, bacteria. Show Answer Correct Answer: A) Water, sunlight, carbon dioxide. 7. Selective breeding leads to genetic change in a population.Which factor causes the population to change in selective breeding? A) Environmental conditions or challenges. B) Individual choice. C) Human intervention. D) Migration over long distances. Show Answer Correct Answer: C) Human intervention. 8. Which type of succession happens when a new island is formed by a volcano erupting? A) Primary succession. B) Secondary succession. Show Answer Correct Answer: A) Primary succession. 9. Organism of the same species that live in the same area A) Community. B) Population. Show Answer Correct Answer: B) Population. 10. What is evaporation? A) The change of solid water (ice) into liquid water. B) The change of liquid water into water vapor. C) The change of water vapor into liquid water. D) The falling of liquid water from the atmosphere. Show Answer Correct Answer: B) The change of liquid water into water vapor. 11. A type of consumer that eats only meat is called a ..... A) Herbivore. B) Carnivore. C) Omnivore. D) Brucivore. Show Answer Correct Answer: B) Carnivore. 12. Food, water, sunlight, air, soil are resources that are often ..... A) Limiting factors. B) Symbiosis. C) Communities. D) None of above. Show Answer Correct Answer: A) Limiting factors. 13. How are populations different from communities? A) Populations consist of one species; communities consist of many species. B) Populations can contain plants and fungi; communities consist of animals only. C) Populations consist of many species; communities consist of one species. D) Populations consist of animals only; communities can contain plants and fungi. Show Answer Correct Answer: A) Populations consist of one species; communities consist of many species. 14. A new golf course is built next to a river. Over the past several months, the nitrate levels of the water in the river have been increasing. Which best explains the cause of the increasing nitrate levels? A) Increased growth of algae. B) Decreased biodiversity. C) Runoff from fertilizer. D) Chemical reactions with pesticides and fertilizers. Show Answer Correct Answer: C) Runoff from fertilizer. 15. Two male Giraffes are fighting over the last green leaf of a tree that is dying. A) Competition. B) Mutualism. C) Predation. D) Commensalism. Show Answer Correct Answer: A) Competition. 16. What happens during nitrogen fixation? A) Bacteria in the soil convert nitrate into nitrogen gas and nitrous oxide. B) Nitrogen wastes are into ammonium.Organisms convert nitrogen into carbon dioxide and energy,. C) Organisms convert nitrogen into carbon dioxide and energy,. D) Atmospheric nitrogen diffuses into the soil and is converted into ammonia. Show Answer Correct Answer: D) Atmospheric nitrogen diffuses into the soil and is converted into ammonia. 17. Barnacles create home sites by attaching themselves to whales. The whale is unaffected. A) Commensalism. B) Mutualism. C) Predation. D) Laziness. Show Answer Correct Answer: A) Commensalism. 18. In the water cycle, what step occurs when water goes directly from a solid to a gas? A) Infiltration. B) Condensation. C) Sublimation. D) Precipitation. Show Answer Correct Answer: C) Sublimation. 19. A group of organisms A) Organism. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: B) Population. 20. Ecology means-study of living things and their interactions with the eniviorment of abiotic and biotic organisms A) False. B) True. Show Answer Correct Answer: B) True. ← 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