This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 253 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 253 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the bacteria in the roots of leguminous plants? A) Haemophilus. B) Neisseria. C) Rhizobium. D) Pseudomonas. Show Answer Correct Answer: C) Rhizobium. 2. An animal that eats only meat A) Herbivores. B) Carnivores. C) Omnivores. D) None of above. Show Answer Correct Answer: B) Carnivores. 3. An important need for a bird is a safe place to build a nest. If a bird did not have a place to build a nest, what would most likely occur? A) The number of new bird diseases in the area would increase. B) The number of predators in the area would increase. C) The number of food resources for the bird would decrease. D) The number of offspring would decrease. Show Answer Correct Answer: D) The number of offspring would decrease. 4. Which of the following describes an ecosystem? A) Producers + consumers + decomposers + non-living component. B) Producers + decomposers + habitats + non-living systems. C) Producers + consumers + habitats + non-living component. D) Producers + decomposers + habitats + non-living component. Show Answer Correct Answer: A) Producers + consumers + decomposers + non-living component. 5. The things that limit the size of a population, such as the amount of rainfall or food. A) Nonlimiting factors. B) Limiting factors. C) Biotic factors. D) Abiotic factors. Show Answer Correct Answer: B) Limiting factors. 6. During Succession, what is the name of the species that comes first? A) P1 generation. B) Pioneer Species. C) Founding Members. D) Starting Population. Show Answer Correct Answer: B) Pioneer Species. 7. Flood A) Flood. B) Drought. C) Volcanic eruption. D) Avalanche. Show Answer Correct Answer: A) Flood. 8. Which human activity would preserve nonrenewable resources? A) Deforestation. B) Removingcarnivores from a forest. C) Recycling. D) Heating homes with fossil fuels. Show Answer Correct Answer: C) Recycling. 9. All the members of one species that live within an area of an ecosystem A) Population. B) Community. C) Niche. D) None of above. Show Answer Correct Answer: A) Population. 10. The nitrogen cycle helps with the development of ..... A) Ammonification. B) Building amino acids. C) Building carbohydrates. D) None of above. Show Answer Correct Answer: B) Building amino acids. 11. Shows one possible flow of energy A) Food web. B) Food chain. C) Energy pyramid. D) None of above. Show Answer Correct Answer: B) Food chain. 12. The global system that contains most of the life on earth is ..... A) Atmosphere. B) Geosphere. C) Hydrosphere. D) Biosphere. Show Answer Correct Answer: D) Biosphere. 13. A log rotting on the ground is ..... A) Parasite. B) Consumer. C) Abiotic. D) Biotic. Show Answer Correct Answer: D) Biotic. 14. True or False; Herbivores eat Carnivores. A) True. B) False. Show Answer Correct Answer: B) False. 15. The variety of organisms in an ecosystem or on Earth is A) Biodiversity. B) Adaptation. C) Succession. D) Selection. Show Answer Correct Answer: A) Biodiversity. 16. Defense of a space against encroachment by other individuals. A) Habituation. B) Migration. C) Submission. D) Territoriality. Show Answer Correct Answer: D) Territoriality. 17. Plants use carbon dioxide in the process of ..... A) Decay. B) Shedding leaves. C) Photosynthesis. D) Respiration. Show Answer Correct Answer: C) Photosynthesis. 18. Phytoplankton are the primary producers of the ocean. Where would you be most likely to find plankton? A) At the bottom of the ocean. B) At the surface of the ocean. C) In the middle of the ocean. D) Along the seafloor of the ocean. Show Answer Correct Answer: B) At the surface of the ocean. 19. Nitrogen fixation is done by by nitrogen-fixing plants. A) True. B) False. Show Answer Correct Answer: B) False. 20. This ecosystem has trees (both leaf and needle), shrubs, grasses, ferns, and animals. A) Forest. B) Ocean. C) Grassland. D) Estuary. Show Answer Correct Answer: A) Forest. ← 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