This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the ultimate ORIGINAL source of energy for living things A) Sugar. B) Sun. C) Moon. D) Carbon Dioxide. Show Answer Correct Answer: B) Sun. 2. Which element is the most abundant in the atmosphere? A) Oxygen. B) Nitrogen. C) Phosphorus. D) Sulfur. Show Answer Correct Answer: B) Nitrogen. 3. What is VARIATION? A) The gradual change of species over time. B) Differences in traits between members of the same species. C) Organisms develop in similar ways in the womb. D) Survival of the fittest. Show Answer Correct Answer: B) Differences in traits between members of the same species. 4. Which of the following is MOST likely an indirect value of biodiversity conservation? A) Obtaining lumber from forest trees. B) Obtaining medicinal products from plants. C) Enjoying recreational activities in natural environments. D) Generating an income for the guides of nature tours. Show Answer Correct Answer: C) Enjoying recreational activities in natural environments. 5. Mutualism A) A relation in which two organisms live closely together. B) Parasite benefits host is hurt. C) One species benefits the other is neither hurt nor helped,. D) Both species benefit. Show Answer Correct Answer: D) Both species benefit. 6. Which shows a complete picture of the flow of energy through an ecosystem. A) Food Chain. B) Food Web. Show Answer Correct Answer: B) Food Web. 7. Decayed organic matter in soil A) Humus. B) Clay. C) Silt. D) None of above. Show Answer Correct Answer: A) Humus. 8. A plant has about 10, 000 J of energy. How much energy would a tertiary consumer get from this plant? A) 1J. B) 10J. C) 100J. D) 1000J. Show Answer Correct Answer: B) 10J. 9. What type of symbiosis? *The plover picks and eats scraps of meat from the crocodile's teeth. *The crocodile gets a free teeth-cleaning! A) Commensalism. B) Mutualism. C) Parasitism. D) Predation. Show Answer Correct Answer: B) Mutualism. 10. What is the branch of science that deals with the study of living things and their relationship with the environment? A) Anthropology. B) Ecology. C) Ecosystems. D) None of above. Show Answer Correct Answer: B) Ecology. 11. Which of the following best describes how carbon dioxide in the atmosphere is changed by living organisms? A) It is absorbed by plants during photosynthesis. B) It is exchanged for water vapor through the process of respiration. C) It is created when factory workers burn fossil fuels. D) It is used by plants and animals to convert organic carbon to oxygen. Show Answer Correct Answer: A) It is absorbed by plants during photosynthesis. 12. Types of orchids grow high on the branches of the tall kapok trees of the jungle. This adaptation allows the orchid to get to the light. The tree is not harmed. A) Parasitism. B) Commensalism. C) Mutualism. D) None of above. Show Answer Correct Answer: B) Commensalism. 13. The job or role of an organism in its environment. A) Population. B) Niche. C) Population. D) Community. Show Answer Correct Answer: B) Niche. 14. An adaptation that helps an animal hide from predators A) Migration. B) Camouflage. C) Hibernation. D) Extinction. Show Answer Correct Answer: B) Camouflage. 15. An organism that eats mostly plants is called a(n) A) Herbivore. B) Consumer. C) Producer. D) Scavenger. Show Answer Correct Answer: A) Herbivore. 16. All the living and non-living things in an area A) Population. B) Biosphere. C) Ecosystem. D) Community. Show Answer Correct Answer: C) Ecosystem. 17. The first organism in a food chain is always a(n): A) Carnivore. B) Herbivore. C) Sun. D) Producer. Show Answer Correct Answer: D) Producer. 18. The trophic level is A) A step in a food chain or food web. B) The level an organism lives on. C) The ground under an organism. D) Total amount of tissue within a trophic level. Show Answer Correct Answer: A) A step in a food chain or food web. 19. Which of the following in an ecosystem is classified as BIOTIC? A) Rock. B) Sand. C) Wind. D) Tree. Show Answer Correct Answer: D) Tree. 20. What's another name for consumer? A) Autotroph. B) Cellular Respiration. C) Photosynthesis. D) Heterotroph. Show Answer Correct Answer: D) Heterotroph. ← 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