This quiz works best with JavaScript enabled. Home > Science > Ecology – Quiz 137 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 137 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is an example of a biotic factor in the environment? A) The climate in the region. B) Carnivores that consume other animals. C) Amount of helium gas in the air. D) Flow of water in a river. Show Answer Correct Answer: B) Carnivores that consume other animals. 2. A type of consumer that only eats meat is a A) Herbivore. B) Omnivore. C) Carnivore. D) Decoposer. Show Answer Correct Answer: C) Carnivore. 3. Carbon cycles quickly between organisms and the atmosphere. A) True. B) False. Show Answer Correct Answer: A) True. 4. Only Found in Plants, this organelle has a rigid layer that surrounds cells of plants. Helps protect and support the cell A) Cell Wall. B) Chloroplasts. C) Cytoplasm. D) Cell membrane. Show Answer Correct Answer: A) Cell Wall. 5. Which of these is a population?1 all the insects in a rainforest2 all the tigers in a rainforest3 all the kapok trees in a rainforest A) 1, 2, and 3. B) 1 only. C) 1 and 2 only. D) 2 and 3 only. Show Answer Correct Answer: D) 2 and 3 only. 6. An omnivore eats A) Plants. B) Plants and animals. C) Animals only. D) Air. Show Answer Correct Answer: B) Plants and animals. 7. There is a lot of water in the ..... A) Wall. B) Sand. C) Bedroom. D) Sea. Show Answer Correct Answer: D) Sea. 8. What do all food chains end with A) Producer. B) Primary consumer. C) Secondary consumer. D) Decoposer. Show Answer Correct Answer: D) Decoposer. 9. What amount of percentage does the energy decrease as it goes up the pyramid? A) 100%. B) 1000%. C) 10%. D) 1%. Show Answer Correct Answer: C) 10%. 10. The competitive ..... principle states that two different species cannot occupy the same niche A) Ecosystem. B) Exclusion. Show Answer Correct Answer: B) Exclusion. 11. What are adaptations? A) The behaviors and physical characteristics that allow organisms to live successfully in their environments. B) The role of an organism in its habitat, or how it makes its living. C) The organism that is killed and eaten. D) The organism that benefits in a predator-prey relationship. Show Answer Correct Answer: A) The behaviors and physical characteristics that allow organisms to live successfully in their environments. 12. An organism's role in its community is its ....., and where it lives is its ..... A) Habitat; niche. B) Role in community; niche. C) Niche; role in the community. D) Niche; habitat. Show Answer Correct Answer: D) Niche; habitat. 13. What ecosystem does rock lichen belong to? A) To the mesoecosystem. B) To the macroecosystem. C) Microecosystem. D) World ecosystem. E) Ecosphere. Show Answer Correct Answer: B) To the macroecosystem. 14. A second-level (secondary) consumer CANNOT be which type of consumer? A) Carnivore. B) Omnivore. C) Herbivore. D) None of above. Show Answer Correct Answer: C) Herbivore. 15. The variety of ecosystems within a given region A) Species diversity. B) Genetic diversity. C) Ecosystem diversity. D) Trophic diversity. Show Answer Correct Answer: C) Ecosystem diversity. 16. What do we call a group of organisms of the same species? A) Population. B) Ecosystem. C) Trophic level. D) Community. Show Answer Correct Answer: A) Population. 17. For secondary succession of an ecosystem to occur, what must be present? A) Soil. B) Lichens. C) Grass. D) Rock. Show Answer Correct Answer: A) Soil. 18. What step of the water cycle occurs when clouds become too heavy? A) Condensation. B) Runoff. C) Precipitation. D) Evaporation. Show Answer Correct Answer: C) Precipitation. 19. Food chains are ..... A) A diagram showing what it eats and what eats it. B) A role in the community. C) The abiotic and biotic factors. D) The energy flow. Show Answer Correct Answer: A) A diagram showing what it eats and what eats it. 20. If a mutation introduces a new skin color in a lizard population, which factor might determine whether the frequency of the new allele will increase? A) How many other alleles are present. B) How many phenotypes are present in the population. C) Whether the mutation makes some lizards more fit for their environment than other lizards. D) Whether the mutation was caused by nature or by human intervention. Show Answer Correct Answer: C) Whether the mutation makes some lizards more fit for their environment than other lizards. ← 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