This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Why do pollutants BIOACCUMULATE? A) Because the concentration grows as you go higher up the food chain. B) Because the organism cannot break down / digest the pollutant once it is ingested. C) Because the pollutant is in low quantities in the environment. D) Because the pollutant is easy to digest. Show Answer Correct Answer: B) Because the organism cannot break down / digest the pollutant once it is ingested. 2. Third Trophic Level A) Producer. B) Primary Consumer. C) Secondary Consumer. D) Tertiary Consumer. Show Answer Correct Answer: C) Secondary Consumer. 3. What type of relationship exists between lichens and trees? A) Mutualism. B) Parasitism. C) Commensalism. D) Competition. Show Answer Correct Answer: C) Commensalism. 4. Which of the following describes tRNA A) Reads mRNA at the ribosome and matches correct amino acid. B) Sneaks into the nucleus to copy DNA. C) A part of the cell that holds genetic information. D) None of the above. Show Answer Correct Answer: A) Reads mRNA at the ribosome and matches correct amino acid. 5. Which factor is likely to increase population density? A) High birth and immigration rates. B) High death and emigration rates. C) Decreased food availability. D) Increased natural disasters. Show Answer Correct Answer: A) High birth and immigration rates. 6. What do you call those organisms that feed on dead plants and animals? An example of these are mushrooms A) Bacteria. B) Grass. C) Virus. D) Fungi. Show Answer Correct Answer: D) Fungi. 7. What does a herbivore primarily feed on in an ecosystem? A) Meat. B) Rocks. C) Plants. D) Water. Show Answer Correct Answer: C) Plants. 8. Herbivores are referred to as ..... consumer. A) Secondary. B) Primary. C) Tertiary. D) None of the above. Show Answer Correct Answer: B) Primary. 9. The benefits people gain from ecosystems A) Ecosystem services. B) Ecosystem disruption. C) Invasive species. D) None of the above. Show Answer Correct Answer: A) Ecosystem services. 10. The two factors that make up the ecosystem are: A) Biotic factors (living factors); abiotic factors (nonliving factors). B) Photosynthesis and cellular respiration. C) Carbon dioxide and oxygen. D) None of the above. Show Answer Correct Answer: A) Biotic factors (living factors); abiotic factors (nonliving factors). 11. These organisms cannot make their own food; they must eat something for energy A) Decomposer. B) Consumer. C) Producer. D) None of the above. Show Answer Correct Answer: B) Consumer. 12. Sunlight, pH of water, temperature, rocks, soil and air would all be ..... A) Biotic. B) Abiotic. C) Ecosystems. D) Habitats. Show Answer Correct Answer: B) Abiotic. 13. What is the classification level directly below domain? A) Phylum. B) Genus. C) Species. D) Kingdom. Show Answer Correct Answer: D) Kingdom. 14. Which type of symbiosis involves one species benefitting while the other is unaffected? +/0 A) Mutualism. B) Commensalism. C) Parasitism. D) None of the above. Show Answer Correct Answer: B) Commensalism. 15. Green plants are an example of photoautotrophs A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 16. An organism that converts energy of the sun into chemical energy. A) Herbivore. B) Carnivore. C) Omnivore. D) Producer. Show Answer Correct Answer: D) Producer. 17. What is another term that autotrophs are called? A) Heterotrophs. B) Consumers. C) Herbivores. D) Producers. Show Answer Correct Answer: D) Producers. 18. Food production, purifying water, storing carbon, and regulating pests are all examples of what? A) Ecosystem services. B) Ecosystem resilience. C) Abiotic factors in ecosystems. D) Biodiversity. Show Answer Correct Answer: A) Ecosystem services. 19. Which correctly shows the flow of energy to an apex predator? A) Producer $\rightarrow$ Sun $\rightarrow$ Herbivore $\rightarrow$ Predator. B) Sun $\rightarrow$ Producer $\rightarrow$ Herbivore $\rightarrow$ Carnivore $\rightarrow$ Apex predator. C) Apex predator $\rightarrow$ Carnivore $\rightarrow$ Herbivore $\rightarrow$ Sun. D) Herbivore $\rightarrow$ Producer $\rightarrow$ Sun $\rightarrow$ Carnivore. Show Answer Correct Answer: B) Sun $\rightarrow$ Producer $\rightarrow$ Herbivore $\rightarrow$ Carnivore $\rightarrow$ Apex predator. 20. Di dalam suatu ekosistem, jamur dan bakteri yang bersifat saprofit berperan sebagai ..... A) Herbivora. B) Karnivora. C) Produsen. D) Pengurai. Show Answer Correct Answer: D) Pengurai. 21. Extinction means: A) Adaptation. B) Migration. C) Species disappears. D) Succession. Show Answer Correct Answer: C) Species disappears. 22. If one organism benefits while the other is neither helped nor harmed in a relationship, it is an example of: A) Commensalism. B) Mutualism. C) Parasitism. D) Symbiosis. Show Answer Correct Answer: A) Commensalism. 23. Sistem organ / organ system2. sel / cell3. jaringan / tissue4. organ5. organismurutan organsisasi yang tepat adalah A) 2-4-3-1-5. B) 2-3-1-4-5. C) 2-3-4-1-5. D) 2-4-1-3-5. Show Answer Correct Answer: C) 2-3-4-1-5. 24. What's is an abiotic factor? A) A living thing. B) A non-iving thing. C) A producer. D) None of the above. Show Answer Correct Answer: B) A non-iving thing. 25. This biome covers 3/4 of the Earth's surface A) Tundra. B) Deciduous Forrest. C) Ocean. D) Lake. Show Answer Correct Answer: C) Ocean. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 14 Ecosystem Quiz 1Class 12 Biology Chapter 14 Ecosystem Quiz 2Class 12 Biology Chapter 14 Ecosystem Quiz 3Class 12 Biology Chapter 14 Ecosystem Quiz 4Class 12 Biology Chapter 14 Ecosystem Quiz 5Class 12 Biology Chapter 14 Ecosystem Quiz 6Class 12 Biology Chapter 14 Ecosystem Quiz 7Class 12 Biology Chapter 14 Ecosystem Quiz 8Class 12 Biology Chapter 14 Ecosystem Quiz 9Class 12 Biology Chapter 14 Ecosystem Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books