This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 15 Biodiversity And Conservation – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Activities such as camping in wilderness areas. A) Poaching. B) Biodiversity hotspots. C) Ecotourism. D) Biotourism. Show Answer Correct Answer: C) Ecotourism. 2. All of the following are included in exsitu conservation except A) Wildlife Safari parks. B) Sacred groves. C) Botanical gardens. D) Seed banks. Show Answer Correct Answer: B) Sacred groves. 3. Among animals, ..... are the most species rich taxonomic group. A) Mollusc. B) Crustaceans. C) Insects. D) None of the above. Show Answer Correct Answer: C) Insects. 4. How does eutrophication affect aquatic ecosystems? A) It increases oxygen levels in water. B) It increases biodiversity in aquatic ecosystems. C) It cleans water by removing pollutants. D) It causes an overgrowth of algae, leading to oxygen depletion. Show Answer Correct Answer: D) It causes an overgrowth of algae, leading to oxygen depletion. 5. Species richness generally increases toward the poles. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. Why is ecosystem diversity important? A) Ecosystem diversity is not relevant to climate change. B) Ecosystem diversity reduces the number of species. C) Ecosystem diversity only benefits humans directly. D) Ecosystem diversity is very important for resilience, species support, and essential services. Show Answer Correct Answer: D) Ecosystem diversity is very important for resilience, species support, and essential services. 7. Ecological diversity refers to diversity at which level? A) Genetic level. B) Species level. C) Ecosystem level. D) Population level. Show Answer Correct Answer: C) Ecosystem level. 8. Fill in the blank:The IUCN Red List (2004) documents the extinction of ..... species in the last 500 years. A) 784. B) 120. C) 1500. D) 350. Show Answer Correct Answer: A) 784. 9. The number of different species and the relative abundance of each species in a biological community is called: A) Species diversity. B) Genetic diversity. C) Ecosystem diversity. D) Biome diversity. Show Answer Correct Answer: A) Species diversity. 10. Fill in the blank:More than ..... million species have been recorded in the world, but there might still be nearly 6 million species on earth waiting to be discovered. A) 1.5. B) 3. C) 10. D) 0.5. Show Answer Correct Answer: A) 1.5. 11. What is the term used when alien species are introduced unintentionally or deliberately and cause decline or extinction of indigenous species? A) Alien species invasions. B) Habitat restoration. C) Genetic drift. D) Ecological succession. Show Answer Correct Answer: A) Alien species invasions. 12. A situation where we deliberately want to make a species extinct is justified when: A) The species poses a significant threat to human health or agriculture. B) The species is endangered and needs protection. C) The species is beneficial to the ecosystem. D) The species is a popular pet. Show Answer Correct Answer: A) The species poses a significant threat to human health or agriculture. 13. The species confined to a particular region and not found elsewhere is termed as A) Endemic. B) Rare. C) Keystone. D) Alien. Show Answer Correct Answer: A) Endemic. 14. Why do most marine food chains rarely have more than four trophic levels? A) Many species have become extinct. B) Fishing activities have increased significantly. C) There is great competition for food. D) Energy is transferred inefficiently as it moves along the food chain. Show Answer Correct Answer: D) Energy is transferred inefficiently as it moves along the food chain. 15. This is a place where flowers, fruits, and vegetables are grown. A) Seed Gene Bank. B) Botanical Gardens. C) All the above. D) None of the above. Show Answer Correct Answer: B) Botanical Gardens. 16. It is often difficult to save individual species because A) Small populations are more prone to disease. B) Inbreeding may result in genetic disorders. C) Captive species may not reproduce in the wild. D) All are correct. Show Answer Correct Answer: D) All are correct. 17. High biodiversity ensures that organisms from different species are able to mate and create new species. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. What is a natural disturbance that happens in regular frequency-like dry/wet seasons? A) Periodic. B) Episodic. C) Random. D) Leap year. Show Answer Correct Answer: A) Periodic. 19. There is a plan to establish an 8000 kilometer long strip of land across 8 Asian countries to rejoin fragments of tiger habitat. This is an example of a A) Wildlife corridor. B) Worldwide biodiversity treaty. C) Captive breeding program. D) Conservation concession. Show Answer Correct Answer: A) Wildlife corridor. 20. Which of the following statements about the California Condor is correct? A) The California condor has made a dramatic comeback and has been removed from the endangered species list. B) The California condor is the subject of a captive-breeding program. C) Several hundred breeding pairs of California condors have been released into the wild. D) All of the above. Show Answer Correct Answer: B) The California condor is the subject of a captive-breeding program. 21. What is an environmental disturbance that drastically reduces population size and kills organisms regardless of their genome? A) Shannon Index. B) Bottleneck Event. C) Inbreeding Depression. D) Ecosystem Resilience. Show Answer Correct Answer: B) Bottleneck Event. 22. An ecosystem has a stable population of white-tailed deer. What is the most likely outcome if a new species of deer that competed for the same resources were introduced? A) The white tailed deer population would increase. B) The producer population would decrease. C) The deer will not be affected. D) The predator population would decrease. Show Answer Correct Answer: B) The producer population would decrease. 23. ..... happens when fertilizers, animal waste, sewage or other substances rich in nitrogen and phosphorus are lost into waterways causing excessive algae growth. A) Eutrophication. B) Introduced species. C) Biological Augmentation. D) Nonrenewable Resource. Show Answer Correct Answer: A) Eutrophication. 24. The term Biodiversity hotspots mean ..... A) Regions with high levels of species richness and endemism. B) Regions with hot thermal springs and rivers. C) Spots on one species of frog, that makes our skin burn if touched. D) None of the above. Show Answer Correct Answer: A) Regions with high levels of species richness and endemism. 25. Overuse of species with economic value-a factor in species extinction. A) Background Extinction. B) Mass Extinction. C) Natural Resource. D) Overexploitation. Show Answer Correct Answer: D) Overexploitation. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 15 Biodiversity And Conservation Quiz 1Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 2Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 3Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 4Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 5Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 6Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 7Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 8Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 9Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books