This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 248 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 248 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A producer that makes their own food is also called A) Heterotroph. B) Autotroph. C) Consumer. D) Detrivorous. Show Answer Correct Answer: B) Autotroph. 2. Mice eat grain laced with rat poison, but don't die immediately. Snakes eat these mice and then the snakes are soon eaten by a hawk. Which of these organisms would have the highest level of the rat poison if it biomagnifies? A) The grain. B) The mouse. C) The snake. D) The hawk. Show Answer Correct Answer: D) The hawk. 3. Bacteria is ..... A) Biotic. B) Abiotic. Show Answer Correct Answer: A) Biotic. 4. A large area that has a particular climate, particular plants and particular animals is a A) Ecology. B) Biome. C) Ecosystem. D) Biosphere. Show Answer Correct Answer: B) Biome. 5. Obtain energy by consuming organic molecules made by other organisms A) Chemosynthesis. B) Biomass. C) Consumer. D) Decoposer. Show Answer Correct Answer: C) Consumer. 6. The Earth's food chain starts with: A) Carnivores. B) Plants. C) Proteins. D) Zooplankton. Show Answer Correct Answer: B) Plants. 7. A group of different populations that live together A) Community. B) Population. C) Species. D) Friendships. Show Answer Correct Answer: A) Community. 8. Which is an "abiotic factor" in an ecosystem? A) Bird. B) Fungi. C) Ant. D) Rock. Show Answer Correct Answer: D) Rock. 9. Which of the following limiting factors is NOT a density independent limiting factor? A) Land development. B) Pollution. C) Disease. D) Natural disasters. Show Answer Correct Answer: C) Disease. 10. A group of deer, chipmunks, otters, and insects is a ..... A) Population. B) Organism. C) Community. D) Ecosystem. Show Answer Correct Answer: C) Community. 11. What is the role of dead leaves in an ecosystem? A) Provides shelter to growing seeds. B) Provides nutrients to other plants. C) Prevents fungus from growing at the base of a tree. D) Releases chlorophyll into the grass as they decay. Show Answer Correct Answer: B) Provides nutrients to other plants. 12. Bacteria are important in the nitrogen cycle because they A) Help convert nitrogen into a form that organisms can use. B) Respire, returning carbon dioxide into the atmosphere. C) Decay and eventually form fossil fuels. D) Produce sugars that plants can use. Show Answer Correct Answer: A) Help convert nitrogen into a form that organisms can use. 13. Which of the following are NOT density dependent factors? A) Competition for resources. B) Predation. C) Disease. D) Natural disasters. Show Answer Correct Answer: D) Natural disasters. 14. An animal that is eaten is called ..... A) Prey. B) Predator. Show Answer Correct Answer: A) Prey. 15. Radioactive decay A) Types of reactions. B) Alloy. C) Reaction decay. D) Radioactive decay. Show Answer Correct Answer: D) Radioactive decay. 16. The Eagle in the food web represents a: A) Producer. B) Secondonary Comsumer. C) Primary Comsumer. D) Tertiary Comsumer. Show Answer Correct Answer: D) Tertiary Comsumer. 17. The source of all energy transferred among organisms is ..... A) Plant matter. B) The ocean. C) The Sun. D) Oxygen. Show Answer Correct Answer: C) The Sun. 18. Why are bees considered a keystone species? A) The honey they make supports the bear population. B) They pollinate flowers that produce fruit which supports the ecosystem. C) They sting when threatened. D) They live in hives. Show Answer Correct Answer: B) They pollinate flowers that produce fruit which supports the ecosystem. 19. Which best defines a population? A) All the organisms in an ecosystem. B) All the animals that share similar anatomical features. C) All the animals that acquire resources through similar methods. D) All the interbreeding members of a certain species in an ecosystem . Show Answer Correct Answer: D) All the interbreeding members of a certain species in an ecosystem . 20. The three domains of Biosphere are: A) Land, water and air. B) Land, plants and animals. C) Land, mountain and air. D) Land, human beings and water. Show Answer Correct Answer: A) Land, water and air. ← 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