This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 200 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 200 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What effect did reintroducing wolves to Yellowstone park have? A) Diversity increased. B) Diversity decreased. C) Wolves destroyed the habitat. D) Wolves attacked people in the park. Show Answer Correct Answer: A) Diversity increased. 2. Why must ALL organisms have food? A) Food is a source of energy. B) Food supplies cells with oxygen. C) Organisms never make their own food. D) Because I said so. Show Answer Correct Answer: A) Food is a source of energy. 3. In this food web, the lion plays the role of ..... A) Secondary Consumer. B) Apex predator. C) Producer. D) Prey. Show Answer Correct Answer: B) Apex predator. 4. How does energy flow in a food chain? A) From the lowest trophic level to the highest. B) From the consumer to the producer. C) From the sun to the consumer. D) From the highest trophic level to the lowest. Show Answer Correct Answer: A) From the lowest trophic level to the highest. 5. Any part of the Earth where life can exist is known as ..... A) Atmosphere. B) Community. C) Biosphere. D) Ecosystem. Show Answer Correct Answer: C) Biosphere. 6. In one year, 35 giraffes are born to a population. What does this number represent? A) Growth rate. B) Emigration. C) Immigration. D) Birth rate. Show Answer Correct Answer: D) Birth rate. 7. The physical environment makes the ..... for many different kinds of organisms. A) Habitat. B) Tree. C) Pond. D) Environment. Show Answer Correct Answer: A) Habitat. 8. What is labeled as 6? A) Biosphere. B) Community. C) Ecosystem. D) Biome. Show Answer Correct Answer: A) Biosphere. 9. A model that shows a sequence of feeding relationships A) Food web. B) Food chain. C) Consumer. D) Producer. Show Answer Correct Answer: B) Food chain. 10. Individual ecosystems grouped together according to the climate, the predominant vegetation, and characterized by adaptations of organisms to that particular environment. A) Biome. B) Map. C) Earth. D) None of above. Show Answer Correct Answer: A) Biome. 11. What happens to a prairie if it is overgrazed (too many cattle in a given space) by cattle? A) The soil becomes muddy. B) The soil turns to clay. C) The soil will become dry and sandy. D) There will be no effect. Show Answer Correct Answer: C) The soil will become dry and sandy. 12. What kingdom's organisms often live in super harsh environments? A) Archea. B) The animal. C) Plantae. D) Protists. Show Answer Correct Answer: A) Archea. 13. What is an example of a limiting factor? A) Food, water and space. B) Food, water and sunlight. Show Answer Correct Answer: A) Food, water and space. 14. Organisms that break down wastes and dead organisms and return the nutrients to the soil A) Producer. B) Consumer. C) Decoposer. D) Omnivore. Show Answer Correct Answer: C) Decoposer. 15. Eat plants and animals A) Herbivores. B) Prey. C) Omnivores. D) Predator. Show Answer Correct Answer: C) Omnivores. 16. ..... occurs when more than one individual or population tries to use the same limited resource. A) Niche. B) Predator-prey. C) Availability. D) Competition. Show Answer Correct Answer: D) Competition. 17. How plants get the nitrogen they need A) From the air. B) From the soil or water in which they live. C) From the Sun. D) From broken down rocks. Show Answer Correct Answer: B) From the soil or water in which they live. 18. Which of the following is an example of a prey organism's adaptation? A) A porcupine's needles. B) All of these are prey adaptations. C) A frog's bright colors. D) A plant's poisonous chemicals. Show Answer Correct Answer: B) All of these are prey adaptations. 19. Which of the following would alter the carrying capacity of an ecosystem for a particular species? A) An increase in the birth rate of that species. B) An increase in emigration of individuals of the species to a new habitat. C) A decrease in the death rate for members of the species. D) A decrease in water availability for the species due to a drought. Show Answer Correct Answer: D) A decrease in water availability for the species due to a drought. 20. An organism that cannot adapt to changes in the environment will most likely- A) Produce more offspring. B) Die. C) Change its traits to survive. D) Store more food. Show Answer Correct Answer: B) Die. ← 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