This quiz works best with JavaScript enabled. Home > Science > Earth > Ecology – Quiz 242 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Ecology Quiz 242 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A close relationship between different species. A) Symbiosis. B) Mutualism. C) Commensalism. D) Parasitism. Show Answer Correct Answer: A) Symbiosis. 2. Which adaptation protects some plants from being eaten? A) Thick, waxy skin. B) Thick stems. C) Thorns or spines. D) Thick leaves. Show Answer Correct Answer: C) Thorns or spines. 3. Chemosynthesis is the process in which organisms A) Form carbohydrates using chemicals. B) Get energy by eating other organisms. C) Make chemicals that absorb sunlight. D) Use energy from the sun to form carbohydrates. Show Answer Correct Answer: A) Form carbohydrates using chemicals. 4. In which type of symbiotic relationship does one species benefit while the other species is unaffected? A) Commensalism. B) Parasitism. C) Mutualism. D) Predation. Show Answer Correct Answer: A) Commensalism. 5. Biotic relationships involves interactions between: A) Organisms and non-living surroundings. B) Organisms and their living and non-living surroundings. C) Organisms of the same species. D) Living organisms of different species. Show Answer Correct Answer: D) Living organisms of different species. 6. Respiration A) Absorbs CO2. B) Releases CO2. Show Answer Correct Answer: B) Releases CO2. 7. The mean of these numbers:3, 3, 5, 6 would be: A) 4.25. B) 4.67. C) 3. D) 4. Show Answer Correct Answer: A) 4.25. 8. Which of the following is NOT a way to determine population size? A) Sampling. B) Mark and recapture. C) Direct observations. D) Guessing. Show Answer Correct Answer: D) Guessing. 9. Forest clearing, farming, and road building are all examples of A) Biodiversity. B) Population distribution. C) Habitat loss. D) Climate Change. Show Answer Correct Answer: C) Habitat loss. 10. Which of the following is a characteristic of life (living things)? A) Moving. B) Made up of cell. C) Evolve, grow, and development. D) All except moving. Show Answer Correct Answer: D) All except moving. 11. What caused a spike in the human population A) Reading revolution. B) Industrial spread. C) Reading spread. D) Industrial revolution. Show Answer Correct Answer: D) Industrial revolution. 12. A major ecological community such as a grassland A) Habitat. B) Species. C) Biome. D) Community. Show Answer Correct Answer: C) Biome. 13. Organisms that start the growth cycle in succession A) Beginners. B) Pioneering organisms. C) Climax community. D) Establishers. Show Answer Correct Answer: B) Pioneering organisms. 14. Non metals are A) Dull. B) Shiny. C) Ductile. D) Malleable. Show Answer Correct Answer: A) Dull. 15. When will coronavirus end? A) 2021. B) 2022. C) 2050. D) 3000. Show Answer Correct Answer: D) 3000. 16. True or False:An ecosystem with LOW biodiversity is stable. A) True. B) False. Show Answer Correct Answer: B) False. 17. If the plant population decreased, the amount of carbon would ..... A) Stay the same. B) Increase. C) Decrease. D) None of above. Show Answer Correct Answer: B) Increase. 18. These gases, such as carbon dioxide, trap heat in the Earth's atmosphere causing global warming A) Global warming gases. B) Hot House gases. C) Green House gases. D) Thermal pollution. Show Answer Correct Answer: C) Green House gases. 19. What would most likely happen if the rabbit population was removed from this food chain? grass-› rabbit-› fox A) There would be more grass. B) There would be less grass. C) There would be more foxes. D) None of above. Show Answer Correct Answer: A) There would be more grass. 20. This biome is filled with salt water. It covers 70% of earths surface. A) Marine. B) Grassland. C) Fresh Water. D) Rainforest. Show Answer Correct Answer: A) Marine. ← 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