This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 78 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 78 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The ..... of matter involves specific interactions between the biotic and abiotic factors in an ecosystem. A) Recycling. B) Earth. Show Answer Correct Answer: A) Recycling. 2. Producers occupy the first trophic level. A) True. B) False. Show Answer Correct Answer: A) True. 3. What is an example of a secondary consumer A) Grass. B) Alligator. C) Worm. D) Grasshopper. Show Answer Correct Answer: B) Alligator. 4. What converts nitrogen gas into a usable form for plants and animals? A) Bacteria. B) Rain. C) Fungi. D) Car exhaust. Show Answer Correct Answer: A) Bacteria. 5. What are some abiotic factors that could be limiting factors in a river ecosystem? A) Temperature, fertilizer runoff from fields, drought or flood. B) Invasive species, floods. C) Temperature, droughts, floods, over fishing. D) None of above. Show Answer Correct Answer: A) Temperature, fertilizer runoff from fields, drought or flood. 6. What is the process that occurs when new land is formed and slowly changes into a densely wooded forest over the course of hundreds of years? A) Primary ecological succession. B) Secondary ecological succession. C) Tertiary ecological succession. D) Globalization. Show Answer Correct Answer: A) Primary ecological succession. 7. Which of these is the main source of energy on Earth? A) The Sun. B) Producers/Plants. C) Consumers/Animals. D) Decomposers/Fungi. Show Answer Correct Answer: A) The Sun. 8. Biotic factors include sunlight, soil, temperature, and water. A) True. B) False. Show Answer Correct Answer: B) False. 9. An organism's ..... is anything that affects the organism. A) Environment. B) Population. C) Habitat. D) Niche. Show Answer Correct Answer: A) Environment. 10. The main human activity that releases greenhouse gases is A) Riding bicycles. B) Burning fossil fuels. C) Texting on cellphones. D) Eating meat. Show Answer Correct Answer: B) Burning fossil fuels. 11. Cutting down forests A) Deforestation. B) Fossil fuels. C) Protect. D) Wind farm. Show Answer Correct Answer: A) Deforestation. 12. Thinking back to the Energy Pyramid, coyotes prey on prairie dogs. In order for the prairie dog population to survive, how many prairie dogs are needed compared to coyotes? A) Fewer prairie dogs than coyotes. B) Many more prairies dogs than coyotes. C) About the same number of prairie dogs as coyotes. D) There is no relationship between the number of prairie dogs and coyotes. Show Answer Correct Answer: B) Many more prairies dogs than coyotes. 13. What is a symbiotic relationship where one organism benefits and the other does not benefit and is not harmed? A) Parasitism. B) Commensalism. C) Mutualism. D) Competition. Show Answer Correct Answer: B) Commensalism. 14. A large generalized community with similar climate factors A) Biome. B) Biodome. C) Biosphere. D) Biology. Show Answer Correct Answer: A) Biome. 15. Where is the most energy stored? A) In the primary consumers because they eat the most. B) At the top of the pyramid since it is the highest. C) In the tertiary consumers because they are most abundant. D) In the producers because they are most abundant. Show Answer Correct Answer: D) In the producers because they are most abundant. 16. The path of energy through the trophic levels of an ecosystem is called a ..... A) Food Avenue. B) Food Chain. C) Energy Chain. D) Energy Level. Show Answer Correct Answer: B) Food Chain. 17. A life form that is very sensitive to environmental changes in its ecosystem. They can give us early-warning messages that a habitat is suffering. A) Indicator Species. B) Flagship Species. C) Predators. D) Ecosystem Engineers. Show Answer Correct Answer: A) Indicator Species. 18. Driest biome, extreme temps ( very cold at night, very hot during the day, and very little rain. A) Tundra. B) Taiga. C) Desert. D) Forest. Show Answer Correct Answer: C) Desert. 19. Predation is similar to ..... in that both types of relationship benefit one of the interacting species while the other is harmed. A) Commensalism. B) Competition. C) Mutualism. D) Parasitism. Show Answer Correct Answer: D) Parasitism. 20. Which two factors can both cause a population to increase? A) Birth rate and emigration. B) Birth rate and immigration. C) Death rate and immigration. D) Death rate and emigration. Show Answer Correct Answer: B) Birth rate and immigration. ← 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