This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 266 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 266 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. 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. 3. 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. 4. True or False:Survival of the fittest means best or the physically fittest. A) True. B) False. Show Answer Correct Answer: B) False. 5. 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. 6. 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. 7. 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. 8. Don't go there. It isn't ..... A) Sure. B) Safe. C) Difficult. D) Sweet. Show Answer Correct Answer: B) Safe. 9. Green plants and algae make their own food through photosynthesis. What is photosynthesis? A) A cell process that uses energy from sunlight to convert water and oxygen into food. B) A cell process that uses energy from sunlight to convert water and glucose into food. C) A cell process that uses energy from sunlight to convert water and chlorophyll into food. D) A cell process that uses energy from sunlight to convert water and carbon dioxide into food. Show Answer Correct Answer: D) A cell process that uses energy from sunlight to convert water and carbon dioxide into food. 10. What are aquatic organisms that live at the bottom of a body of water? A) Photic. B) Bateric. C) Benthos. D) Lateral. Show Answer Correct Answer: C) Benthos. 11. The surroundings in which an organism lives A) Niche. B) Biotic. C) Ecosystem. D) Environment. Show Answer Correct Answer: D) Environment. 12. Great horned owls and red-tailed hawks have similar requirements for food, space, and nesting materials. What would most likely be the result of great horned owls and red-tailed hawks living in the same community? A) Ecological succession. B) Competition. C) Habitat destruction. D) Parasitism. Show Answer Correct Answer: B) Competition. 13. A group of ecosystems with similar climates and types of organisms is called A) Ecosystem. B) Biome. C) Community. D) Hemisphere. Show Answer Correct Answer: B) Biome. 14. An organism that eats both plants and animals is called a A) Human. B) Herbivore. C) Carnivore. D) Omnivore. Show Answer Correct Answer: D) Omnivore. 15. An inherited trait that helps those organisms that have it to survive A) Niche. B) Structure. C) Characteristic. D) Adaptation. Show Answer Correct Answer: D) Adaptation. 16. The variable "k" in population ecology refers to ..... A) Rate of growth. B) Amount of kangaroos in an ecosystem. C) The carrying capacity of an environment. D) The rate of dispersion within an environment. Show Answer Correct Answer: C) The carrying capacity of an environment. 17. When members of a population work together it is called ..... A) Competition. B) Cooperation. C) Mutualism. D) None of above. Show Answer Correct Answer: B) Cooperation. 18. What is the prefer pH range for aquatic creatures? A) 6-7. B) 6.5-9. C) 5.5-8. D) 6.8. Show Answer Correct Answer: B) 6.5-9. 19. What can you infer from the fact that the disappearance of just one species can disrupt an entire food chain? A) Every food chain depends entirely on a single species. B) Food chains are extremely fragile. C) Food chains can regenerate on their own. D) Food chains would not exist without humans. Show Answer Correct Answer: B) Food chains are extremely fragile. 20. What process occurs when coal (fossil fuel) is used for energy? A) Decomposition. B) Combustion. C) Pressurization. D) Respiration. Show Answer Correct Answer: B) Combustion. ← 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