This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 261 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 261 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What typically happens to a population if it exceeds its carrying capacity? A) Prey species increase. B) Birth rate will exceed death rate. C) Death rate will start to exceed birth rate. D) Migration into the area increases. Show Answer Correct Answer: C) Death rate will start to exceed birth rate. 2. What happens to carbon dioxide, oxygen & photosynthesis during deforestation? A) Photosynthesis decreases and carbon dioxide increases in the atmosphere. Oxygen decreases. B) Photosynthesis increases and carbon dioxide increases in the atmosphere. Oxygen increases. C) Photosynthesis doesn't change, carbon dioxide increases, and oxygen decreases. D) Photosynthesis decreases, Carbon Dioxide decreases, and Oxygen increases. Show Answer Correct Answer: A) Photosynthesis decreases and carbon dioxide increases in the atmosphere. Oxygen decreases. 3. The maximum number of individuals moving into a population. A) Limiting factor. B) Carrying capacity. C) Fluctuation. D) Dispersion. Show Answer Correct Answer: B) Carrying capacity. 4. In a food chain the flow of energy is always ..... A) Uncontrolled. B) Two way. C) Reversible. D) One way. Show Answer Correct Answer: D) One way. 5. The tropical rain forest biome includes regions of several continents. What do all of the regions have in common? A) Same species of animals. B) Same patterns of precipitation and temperature. C) Same area of land covered by vegetations. D) None. Show Answer Correct Answer: B) Same patterns of precipitation and temperature. 6. When organisms consume others, energy is being ..... A) Lost. B) Gained. Show Answer Correct Answer: A) Lost. 7. All the living things in an area makes up a(n): A) Ecosystem. B) Population. C) Biome. D) Community. Show Answer Correct Answer: D) Community. 8. When one organism hunts, eats, and kills anither organism for survival A) Competitive Relationships. B) Predator-PreyRelationships. C) Copperative Relationships. D) None of above. Show Answer Correct Answer: B) Predator-PreyRelationships. 9. Continued depletion of the ozone layer will most likely result in A) Anincrease in skin cancer among humans. B) A decreasein atmospheric pollutants. C) Anincrease in marine ecosystem stability. D) Adecrease in climatic changes. Show Answer Correct Answer: A) Anincrease in skin cancer among humans. 10. Water, soil, minerals, nitrogen and energy are all essential ..... components of an ecosystem. A) Abiotic. B) Materials. C) Biotic. D) Environmental. Show Answer Correct Answer: A) Abiotic. 11. Two different species fighting for the same resources often enough will lead to what outcome? A) Interspecific mating. B) Intraspecific competition. C) Competitive exclusion. D) Predation. Show Answer Correct Answer: C) Competitive exclusion. 12. Which of the following biomes is the coldest, has a low animal population, and very little precipitation? A) Tundra. B) Desert. C) Rainforest. D) Grassland. Show Answer Correct Answer: A) Tundra. 13. Organisms that use dead organisms and the waste material of other organisms for food. A) Decoposer. B) Consumer. C) Producer. D) Independent consumer. Show Answer Correct Answer: A) Decoposer. 14. When a population multiplies by a constant factor at constant time intervals, it is called A) Logistic growth. B) Population density. C) Exponential growth. D) Competitive exclusion. Show Answer Correct Answer: C) Exponential growth. 15. Which of the following contains all Black Bears living in an area? A) Organism. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: B) Population. 16. Which explanation best describes the phosphorus cycle? Phosphorus is A) Found in atmosphere and is used in transpiration and evaporation. B) Not found in atmosphere and is used in transpiration and evaporation. C) Found in atmosphere and is used in DNA, RNA and ATP. D) Not found in atmosphere and is used in DNA, RNA and ATP. Show Answer Correct Answer: D) Not found in atmosphere and is used in DNA, RNA and ATP. 17. True or False:Survival of the fittest means best or the physically fittest. A) True. B) False. Show Answer Correct Answer: B) False. 18. The average weather conditions in an area over a long period of time A) Climate. B) Weather. C) Global warming. D) Pollution. Show Answer Correct Answer: A) Climate. 19. What determines the number of trophic levels in an ecological pyramid? A) It is limitless. B) The amount of energy available. C) There are always four trophic levels. D) There is no way to determine the number. Show Answer Correct Answer: B) The amount of energy available. 20. In a food web, what would a decomposer do? A) Eat soil and rock. B) Feed on meat or plants. C) Break down dead organisms. D) Convert carbon dioxide to oxygen. Show Answer Correct Answer: C) Break down dead organisms. ← 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