This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 161 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 161 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Carbon dioxide is added to the atmosphere by A) Burning fossil fuels. B) Cellular respiration. C) Decomposing organic matter. D) All answers are correct. Show Answer Correct Answer: D) All answers are correct. 2. A lion and a hyena compete for the same food source, a gazelle. What is the relationship between the hyena and gazelle? A) Competition. B) Commensalism. C) Predator-Prey. D) Mutualism. Show Answer Correct Answer: C) Predator-Prey. 3. All the living things and nonliving things in a certain area. A) Food chain. B) Food web. C) Ecosystem. D) None of above. Show Answer Correct Answer: C) Ecosystem. 4. Which of the following are basic needs for animals? A) Shelter, water, food, and protection. B) Water, oxygen, space, shelter, and relaxation. C) Food, water, oxygen, space, and shelter. D) Food, water sunlight, space, and shelter. Show Answer Correct Answer: C) Food, water, oxygen, space, and shelter. 5. A relationship in which one organism benefits while the other is neither helped nor harmed A) Commensalism. B) Parasitism. C) Mutualism. D) Competition. Show Answer Correct Answer: B) Parasitism. 6. Drones have stinger? A) Yes. B) Yes and no. C) No. D) Maybe. Show Answer Correct Answer: C) No. 7. Which of the following lists biotic factors? A) Grass, squirrel, mushroom, soil. B) Grass, squirrel, mushroom, sunlight. C) Grass, squirrel, mushroom, oxygen. D) Grass, squirrel, mushroom, bacteria. Show Answer Correct Answer: D) Grass, squirrel, mushroom, bacteria. 8. Factors in the environment that have an increasing effect as the population size increases (examples:disease, competition, parasites) A) Density-dependent. B) Density-independent. Show Answer Correct Answer: A) Density-dependent. 9. Arctic foxes are white in the winter to blend in with the snow. What adaptation is this? A) Behavioral adaptation. B) Camouflage. C) Migration. D) Hibernation. Show Answer Correct Answer: B) Camouflage. 10. T/F:Abiotic factors are an unimportant part of ecosystems. A) True. B) False. Show Answer Correct Answer: B) False. 11. A forest recovering from the ashes after a fire is an example of? A) Primary Succession. B) Secondary Succession. C) Natural Selection. D) Selective Succession. Show Answer Correct Answer: B) Secondary Succession. 12. Classification of biotic factors: A) Climatic, edaphogenic, orographic, chemical. B) Chemical, edaphogenic, anthropogenic, zoogenic. C) Anthropogenic, orographic, edaphogenic, chemical. D) Phytogenic, zoogenic, microbiogenic. E) Edaphogenic, zoogenic, phytogenic, microbiogenic. Show Answer Correct Answer: D) Phytogenic, zoogenic, microbiogenic. 13. A wolf cub came too close to a skunk, and was sprayed by its foul smelling chemical spray. Now, the wolf cub stays away from skunks. What type of behavior is this? A) Innate behavior. B) Imprinting. C) Learned behavior. D) Migration. Show Answer Correct Answer: C) Learned behavior. 14. An organism that makes its own food by using sunlight or chemicals (also known as an producer) is called a A) Autotroph. B) Predator. C) Consumer. D) Detrivorous. Show Answer Correct Answer: A) Autotroph. 15. Ecology is the study of the ..... of organisms with the environment. A) Number. B) Relationships. C) Journey. D) Types. Show Answer Correct Answer: B) Relationships. 16. Made by A) Conordonna. B) Conor glynn. C) Conorfeen. D) None of the above. Show Answer Correct Answer: C) Conorfeen. 17. What type of symbiosis is this? *Hermit crabs find shells left by snails that have died and move in. * Snails die and leave behind their shells. A) Commensalism. B) Mutualism. C) Parasitism. D) Predation. Show Answer Correct Answer: A) Commensalism. 18. Plants such as the Venus Flytrap respond to stimuli such as touch. Which term refers to a plant's response to touch? A) Gravitropism. B) Thigmotropism. C) Hydrotropism. D) Phototropism. Show Answer Correct Answer: B) Thigmotropism. 19. How does a food chain start? A) Plants use energy from the sun to make food. B) Insects eat plant life. C) Humans eat animals and plant life. D) None of above. Show Answer Correct Answer: A) Plants use energy from the sun to make food. 20. Another name for water is ..... A) Terrestrial. B) Aquatic. C) Latitude. D) Alpine. Show Answer Correct Answer: B) Aquatic. ← 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