This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 14 Ecosystem – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 14 Ecosystem Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Give an example of a producer in a food chain and explain its role. A) A lion, which preys on other animals in the food chain. B) A chef, who cooks the food for the animals in the food chain. C) A rock, which has no role in the food chain. D) An example of a producer in a food chain is a plant. Its role is to convert sunlight into energy through photosynthesis, providing food and energy for the rest of the food chain. Show Answer Correct Answer: D) An example of a producer in a food chain is a plant. Its role is to convert sunlight into energy through photosynthesis, providing food and energy for the rest of the food chain. 2. What is the main goal of studying year 11 biology module 4 on ecosystem dynamics? A) To analyze evidence that present-day organisms have evolved from organisms in the past. B) To memorize the names of all small mammals in Australia. C) To understand the chemical composition of Australian soil. D) To study the climate patterns of Australia over the last century. Show Answer Correct Answer: A) To analyze evidence that present-day organisms have evolved from organisms in the past. 3. Which of the following is most likely to occur if an organism's environment is outside the organism's range of tolerance? A) Organisms fail to reproduce. B) Growth of the organisms increases. C) Organisms develop mutualistic relationships. D) Organisms produce more offspring to increase the chance of survival. Show Answer Correct Answer: A) Organisms fail to reproduce. 4. What significant event in Australia's history contributed to its unique fauna and flora? A) The first human landing on the Australian continent. B) Australia breaking away from the larger landmass of Gondwana. C) The introduction of European settlers to Australia. D) The invention of agriculture in Australia. Show Answer Correct Answer: B) Australia breaking away from the larger landmass of Gondwana. 5. A group of food chains that overlap. A) Food chain. B) Food web. C) Producer. D) Consumer. Show Answer Correct Answer: B) Food web. 6. Soil A) Biotic. B) Abiotic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Abiotic. 7. Which symbols best describe parasitism? A) +, +. B) +, -. C) +, 0. D) -, 0. Show Answer Correct Answer: B) +, -. 8. What is the aim of the GLOBIO model? A) To quantify global human impacts on biodiversity. B) To predict sports outcomes. C) To explore outer space. D) To entertain policymakers. Show Answer Correct Answer: A) To quantify global human impacts on biodiversity. 9. Healthy soil is able to provide all the nutrients that support plant growth, and to do so year after year. What biotic or abiotic factor directly supplies these nutrients? A) Microorganisms that live in the soil or on plant roots. B) Water from rain or melted snow. C) Weathered rocks in the soil. D) Grasses and other small plants. Show Answer Correct Answer: A) Microorganisms that live in the soil or on plant roots. 10. In Hawaii, there are volcanoes. Before anything was there, the volcanoes erupted which produced volcanic rock. Lichens were the first species to arrive, and they broke down the rock into soil. Eventually, plants began to grow. Now, the islands are functioning at their climax community.Is this an example of primary or secondary succession? A) Primary succession. B) Secondary succession. C) All the above. D) None of the above. Show Answer Correct Answer: A) Primary succession. 11. When more than one organism attempts to use the same resource you have A) Competition. B) Niche. C) Adaptation. D) Death. Show Answer Correct Answer: A) Competition. 12. Examples of a producer A) Frog. B) Algae. C) Worm. D) Mouse. Show Answer Correct Answer: B) Algae. 13. What do the arrows in a food chain/web represent? A) They point to the organism that is being eaten. B) They represent how water is transferred within a habitat. C) They show what direction the energy is flowing between organisms. D) None of the above. Show Answer Correct Answer: C) They show what direction the energy is flowing between organisms. 14. Which of the following ecosystems has temperature that stays the SAME top to bottom? A) Grasslands. B) Forests. C) Ponds and Lakes. D) None of the above. Show Answer Correct Answer: C) Ponds and Lakes. 15. What is the greatest threat to biodiversity? A) Habitat loss. B) Global warming. C) Over harvesting. D) Invasive species. Show Answer Correct Answer: A) Habitat loss. 16. Density-independent factors: A) Affect only crowded populations. B) Affect all populations regardless of size. C) Are predator-based. D) Are disease-based. Show Answer Correct Answer: B) Affect all populations regardless of size. 17. Why is it when habitat is fragmented, smaller population sizes lead to extinction? A) Small populations are unable to breed. B) Individuals will always migrate out of the area. C) There are too many individuals in one habitat. D) Gene flow is restricted and inbreeding occurs. Show Answer Correct Answer: D) Gene flow is restricted and inbreeding occurs. 18. Matter also moves by being recycled within and among ecosystems. These cycles of elements and compounds are called: A) Biogeochemical cycles. B) Biomolecules. C) Chemistry. D) None of the above. Show Answer Correct Answer: A) Biogeochemical cycles. 19. Which one of the following best defines the term 'food web'? A) The variety of food that a top carnivore eats. B) A combination of different heterotrophs. C) A long food chain with at least four trophic levels. D) A diagram that shows all the feeding interactions in an ecosystem. Show Answer Correct Answer: D) A diagram that shows all the feeding interactions in an ecosystem. 20. A relationship that helps one organism and doesn't hurt or help the other one.ex. barnacle on whale A) Mutualism. B) Parasitism. C) Commensalism. D) Predator/prey. Show Answer Correct Answer: C) Commensalism. 21. Non-living things in an ecosystem. A) Organism. B) Biotic. C) Zombies. D) Abiotic. Show Answer Correct Answer: D) Abiotic. 22. The overall flow of energy through an ecosystem is from A) Decomposers to consumers to producers. B) Producers to consumers to decomposers. C) Consumers to producers to decomposers. D) None of the above. Show Answer Correct Answer: B) Producers to consumers to decomposers. 23. Commensalism A) A relationship where both organisms benefit. B) A relationship where one organism benefits and the other is harmed. C) A relationship where one organism benefits and the other is not affected. D) A relationship where both organisms are harmed. Show Answer Correct Answer: C) A relationship where one organism benefits and the other is not affected. 24. As populations grow, they tend to spread out into new territory. Which limiting factor is most likely to become an issue? A) Food. B) Shelter. C) Space. D) Water. Show Answer Correct Answer: C) Space. 25. Which of the following is not example of ecosystem? A) Group of gazelle. B) Desert. C) Tropical forest. D) River. Show Answer Correct Answer: A) Group of gazelle. ← 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