This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 15 Biodiversity And Conservation – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Adding natural predators to an ecosystem A) Biological augmentation. B) Biological magnification. C) Eutrophication. D) Bioremediation. Show Answer Correct Answer: A) Biological augmentation. 2. Heterocystous cyanobacteria- A) Only Nostoc. B) Only Anabaena. C) Both Nostoc and Anabaena. D) Vibrio. Show Answer Correct Answer: C) Both Nostoc and Anabaena. 3. What type of pollution causes acid rain? A) Burning of fossil fuels. B) Organic farming. C) Nuclear radiation. D) Urban noise. Show Answer Correct Answer: A) Burning of fossil fuels. 4. A species that is not native to a particular region A) Endemic. B) Exotic. C) Endangered. D) Extinct. Show Answer Correct Answer: B) Exotic. 5. What are the main threats to biodiversity? A) Natural selection. B) Species migration. C) Ecosystem stability. D) Habitat destruction, climate change, pollution, overexploitation, and invasive species. Show Answer Correct Answer: D) Habitat destruction, climate change, pollution, overexploitation, and invasive species. 6. Lacking this type of diversity can lead to a population being largely depleted due to the increased chance of inheriting genetic diseases? A) Species Diversity. B) Genetic Diversity. C) Ecosystem Diversity. D) None of the above. Show Answer Correct Answer: B) Genetic Diversity. 7. A treaty is a(n) A) State law to protect wildlife. B) Agreement under international law. C) Trade-off with landowners. D) Biodiversity program run by zoos. Show Answer Correct Answer: B) Agreement under international law. 8. Which of the following are one of the Broadly Utilitarian arguments to conserve Biodiversity? A) Pollination. B) Firewood. C) It is our moral duty to care for the well being of other species living on our planet with us. D) None of the above. Show Answer Correct Answer: A) Pollination. 9. The increased concentration of toxic substances in organisms at a high trophic level in the food chain A) Endemic. B) Natural resources. C) Biological magnification. D) Bioremediation. Show Answer Correct Answer: C) Biological magnification. 10. Overexploitation was once the main cause of what? A) Biodiversity. B) Extinction. C) Pollution. D) None of the above. Show Answer Correct Answer: B) Extinction. 11. When a large percentage of all living species become extinct in a relatively short period of time. A) Gradual extinction. B) Mass extinction. C) Background extinction. D) Bio extinction. Show Answer Correct Answer: B) Mass extinction. 12. What is NOT factor that threatens biodiversity? A) Population growth. B) Habitat Loss. C) Overexploitation. D) Clean water. Show Answer Correct Answer: D) Clean water. 13. What type of species appear last, after soil is deepened and enriched with nutrients by cycles of growth and death by early & mid successional species? A) Lichen. B) Large trees. C) Wildflowers. D) Primary consumers. Show Answer Correct Answer: B) Large trees. 14. Introduction of Parthenium lead to the extinction of some indigenous species of plants. This is an example of A) Habitat loss. B) Fragmentation. C) Alien species invasion. D) Over exploitation. Show Answer Correct Answer: C) Alien species invasion. 15. The disappearance of a particular population from a given area, but not of the entire species globally, is called A) Extirpation. B) Extinction. C) Poaching. D) Fragmentation. Show Answer Correct Answer: A) Extirpation. 16. It is one of the 3 levels of biodiversity that refers to the total number of plants, animals, and insect species that can be found in a particular region A) Alpha Diversity. B) Species Diversity. C) Gamma Diversity. D) Ecosystem Diversity. Show Answer Correct Answer: B) Species Diversity. 17. A species is at serious risk of extinction. A) Threatened. B) Endangered. C) Extinct. D) Extirpated. Show Answer Correct Answer: B) Endangered. 18. What is the role of biodiversity in nutrient recycling? A) It has no role in nutrient recycling. B) It is important for energy production. C) It helps in water purification. D) It allows nitrogen fixation and nutrient recycling to happen. Show Answer Correct Answer: D) It allows nitrogen fixation and nutrient recycling to happen. 19. An ecosystem with ..... biodiversity can collapse if there is a change. A) Lower. B) Higher. C) Resilient. D) None of the above. Show Answer Correct Answer: A) Lower. 20. Using resources at a rate at which they can be replaced or recycled while preserving long term environmental health A) Nonrenewable resource. B) Bioremediation. C) Renewable resource. D) Sustainable use. Show Answer Correct Answer: D) Sustainable use. 21. Which region has the greatest biodiversity on earth according to the passage? A) The Amazonian rain forest in South America. B) The Midwest of the USA. C) Greenland. D) New York. Show Answer Correct Answer: A) The Amazonian rain forest in South America. 22. How can pollution affect ecosystems? A) Pollution enhances ecosystems by increasing biodiversity. B) Pollution negatively impacts ecosystems by harming species, reducing habitats, and disrupting ecological balance. C) Pollution only affects human health, not ecosystems. D) Pollution has no effect on ecosystems. Show Answer Correct Answer: B) Pollution negatively impacts ecosystems by harming species, reducing habitats, and disrupting ecological balance. 23. What is the primary goal of biodiversity conservation? A) To increase the number of human settlements. B) To preserve the variety of life forms on Earth. C) To promote industrial growth. D) To reduce the number of protected areas. Show Answer Correct Answer: B) To preserve the variety of life forms on Earth. 24. What is the ecological importance of biodiversity? A) It leads to overpopulation of species. B) It has no impact on the environment. C) It increases the number of natural disasters. D) It makes ecosystems more stable. Show Answer Correct Answer: D) It makes ecosystems more stable. 25. What does the term 'biodiversity' encompass? A) Only endangered species. B) Agricultural techniques. C) Variety of life from genes to ecosystems. D) Urban development strategies. Show Answer Correct Answer: C) Variety of life from genes to ecosystems. ← 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