This quiz works best with JavaScript enabled. Home > Agriculture > Ecology Environment > Studies > Ecology And Environment – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology And Environment Quiz 6 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. To measure population density, you must divide the number of individuals living in a defined space by the A) Area of the space. B) Birth and death rates. C) Carrying capacity. D) Height of the space. Show Answer Correct Answer: A) Area of the space. 2. Producers are generally found at the beginning of a food chain. Which statement best explains why this is true? A) Consumers are always more complex organisms than producers. B) There are always more consumers than producers in food chains. C) Producers are usually smaller in size than consumers. D) Producers do not rely on other organisms for food. Show Answer Correct Answer: D) Producers do not rely on other organisms for food. 3. Throughout New York State, some farmers have switched from growing a variety of vegetable crops to growing a single crop, such as corn. Other farmers are concerned that such a practice will make it more likely that an entire crop could be lost to disease or infestation by an insect pest. This is a valid concern because this practice A) Increases the number of invasive species. B) Decreases the need to import food. C) Increases the number of decomposers in their fields. D) Reduces the biodiversity of their fields. Show Answer Correct Answer: D) Reduces the biodiversity of their fields. 4. A symbiotic relationship where both organisms benefit. A) Mutualism. B) Predation. C) Commensalism. D) Parasitism. Show Answer Correct Answer: A) Mutualism. 5. Definition of Migration A) The act of leaving one's own country to settle permanently in another. B) Seasonal movement of animals from one region to another. C) The action of coming to live permanently in a foreign country. D) None of above. Show Answer Correct Answer: B) Seasonal movement of animals from one region to another. 6. Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while Species B feeds on caterpillars. The two species coexist successfully because A) Each occupies a different niche. B) They interbreed. C) They use different methods of reproduction. D) Birds compete for food. Show Answer Correct Answer: A) Each occupies a different niche. 7. A population is correctly defined as having which of the following characteristics? I. inhabiting the same general area II. individuals belonging to the same species III. possessing a constant and uniform density and dispersion A) I only. B) I & 11 Only. C) III only. D) II & III only. Show Answer Correct Answer: B) I & 11 Only. 8. What is not a cause of habitat destruction? Logging Forest Fires Sanctuaries Agriculture A) Forest fires. B) Logging. C) Agriculture. D) Sanctuaries. Show Answer Correct Answer: D) Sanctuaries. 9. Group of interacting population s that live in the same geographic area A) Ecosystem. B) Biosphere. C) Habitat. D) Community. Show Answer Correct Answer: D) Community. 10. The process by which individuals that are better adapted to their environment survive and reproduce with more success than less well adapted individuals do A) Natural selection. B) Artificial selection. C) Evolution. D) Adaptation. Show Answer Correct Answer: A) Natural selection. 11. In landfills, leachate means ..... A) A toxic, liquid substance created when water filters through waste materials at a landfill and leaches out, or extracts, toxic substances from them. B) Trash on top of the ground. C) Chemicals in the air at landfills. D) None of above. Show Answer Correct Answer: A) A toxic, liquid substance created when water filters through waste materials at a landfill and leaches out, or extracts, toxic substances from them. 12. An organism that cannot adapt to changes in the environment will most likely- A) Store more food. B) Change its traits to survive. C) Die. D) Produce more offspring. Show Answer Correct Answer: C) Die. 13. Symbiotic relationship in which one organisms benefits and the other organism is not affected A) Commensalism. B) Invasive (non-native) species. C) Nitrogen fixation. D) Mutualism. Show Answer Correct Answer: A) Commensalism. 14. A biotic factor consists of A) Living organisms. B) Non living things. C) Both living and non living organisms. D) Ecosystems. Show Answer Correct Answer: A) Living organisms. 15. A population of goldfish living in a bowl has no predators, no diseases, and unlimited food. Which of the following factors most likely caused the population to stop growing? A) Amount of food. B) Amount of space. C) Amount of air. D) None of above. Show Answer Correct Answer: B) Amount of space. 16. Hardin's "Tragedy of the Commons" essay addresses the conflicts associated with what environmental challenge? A) Curbing overpopulation. B) Protecting shared resources. C) Preventing pollution. D) Preserving biodiversity. Show Answer Correct Answer: B) Protecting shared resources. 17. What is a pioneer species? A) Pioneer means first-so it must be the first thing to grow where nothing has grown before. B) Pioneer means last-it's the last thing in an ecosystem. C) Pioneer has to do with covered wagons and traveling west during the 1800s. D) None of above. Show Answer Correct Answer: A) Pioneer means first-so it must be the first thing to grow where nothing has grown before. 18. Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there? A) Thedecrease of chemical runoff into the oceans. B) Theincrease of light pollution in cities. C) Thedestruction of habitats. D) Increasedacid rain. Show Answer Correct Answer: C) Thedestruction of habitats. 19. Remoras ride along on sharks and eat scraps from shark meals; the sharks neither benefit nor are they harmed. What is this an example of? A) Mutualism. B) Commensalism. C) Parasitism. D) None of above. Show Answer Correct Answer: B) Commensalism. 20. A symbiotic relationship where one organism benefits and the other is unharmed. A) Parasitism. B) Apex predator. C) Commensalism. D) Mutualism. Show Answer Correct Answer: C) Commensalism. 21. What is the result of the pioneer species in Primary Succession? A) Puts fresh oxygen into the air. B) Feeds animals. C) Kills the dead materials after a disaster. D) Creates soil. Show Answer Correct Answer: D) Creates soil. 22. Largest number of individuals of a population that the environment can support ..... A) Mutualism. B) Lag phase. C) Population crash. D) Carrying capacity. Show Answer Correct Answer: D) Carrying capacity. 23. Kudzu in North Carolina has taken over the majority of plant life. This is known as an ..... species. A) Predator. B) Invasive. C) Enemy. D) Native. Show Answer Correct Answer: B) Invasive. 24. A man made, underwater structure that promotes the growth of reef dwelling aquatic organisms. A) Artificial reefs. B) Corral reefs. C) Organisms. D) Food. Show Answer Correct Answer: A) Artificial reefs. 25. A squirrel makes a change to its environment when it- A) Jumps from tree to tree. B) Digs a hole to bury an acorn. C) Climbs a tree. D) Collects acorns. Show Answer Correct Answer: B) Digs a hole to bury an acorn. 26. What do ecosystems have that the other three levels of organization do not have? A) Living things. B) Abiotic factors. C) Organisms. D) Biotic factors. Show Answer Correct Answer: B) Abiotic factors. 27. An unwanted change in the environment that is caused by substances or forms of energy A) Non-renewable resource. B) Renewable resource. C) Pollution. D) Point-source pollutant. Show Answer Correct Answer: C) Pollution. 28. What is an example of an omnivore? A) Human. B) Lion. C) Deer. D) Hawk. Show Answer Correct Answer: A) Human. 29. One characteristic of a stable ecosystem is A) A high number of predators. B) An interdependence of organisms. C) An increase in human interference. D) A lack of biodiversity. Show Answer Correct Answer: B) An interdependence of organisms. 30. Which of the following is true in a climax community? A) The community will constantly evolve and change. B) If one species dies, a new species will fulfill the same role. C) They are stable for a long time, with the same species maintaining their population. D) It goes through a major change called "climax" every few hundred years. Show Answer Correct Answer: C) They are stable for a long time, with the same species maintaining their population. ← PreviousNext →Related QuizzesEcology Environment QuizzesAgriculture QuizzesEcology And Environment Quiz 1Ecology And Environment Quiz 2Ecology And Environment Quiz 3Ecology And Environment Quiz 4Ecology And Environment Quiz 5Ecology And Environment Quiz 7Ecology And Environment Quiz 8Ecology And Environment Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books