This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 15 Biodiversity And Conservation – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Sacred groves are ..... What is their role in conservation? A) Patches of forest preserved by communities for religious reasons, helping conserve biodiversity. B) Large commercial plantations that produce timber for export. C) Urban parks designed for recreational activities. D) Areas cleared for agricultural expansion, reducing biodiversity. Show Answer Correct Answer: A) Patches of forest preserved by communities for religious reasons, helping conserve biodiversity. 2. The process of raising organisms in controlled conditions, such as zoos and botanical gardens, is called (a) . A) A. captive breeding. B) Biome. C) Environment. D) Biodiversity. E) Extinction. Show Answer Correct Answer: A) A. captive breeding. 3. Which of the following is not a reason for protecting biodiversity? A) Medicinal. B) Agricultural. C) Commercial. D) None of the Above. Show Answer Correct Answer: D) None of the Above. 4. According to IUCN (2004), total number of plant and animal species described so far is ..... A) 1.5 billion. B) 5.1 billion. C) 5.1 million. D) 1.5 million. Show Answer Correct Answer: D) 1.5 million. 5. Ecologists estimate the total number of species present in the world by: A) Using sampling and statistical extrapolation methods. B) Counting every individual organism. C) Relying solely on fossil records. D) Estimating based on genetic similarity. Show Answer Correct Answer: A) Using sampling and statistical extrapolation methods. 6. What do we call a species that is likely to become endangered soon throughout all or part of its range? A) Extinct. B) Threatened. C) Endangered. D) Fragmented. Show Answer Correct Answer: B) Threatened. 7. Based on the passage, more than 70 per cent of all the species recorded are which group? A) Plants. B) Animals. C) Fungi. D) Prokaryotes. Show Answer Correct Answer: B) Animals. 8. The Sikhote-Allin Mountains, and the Siberian tigers living on them, are separated from other mountain regions in which the tigers could live. The mountains are an example of a(n) A) Mass extirpation. B) Invasive species. C) Mass extinction. D) Habitat fragment. Show Answer Correct Answer: D) Habitat fragment. 9. What is the role of reforestation in biodiversity conservation? A) Reforestation plays a crucial role in biodiversity conservation by restoring degraded forest ecosystems, providing habitats for various species, and helping to mitigate climate change. B) Reforestation involves cutting down trees to make way for urban development. C) Reforestation has no role in biodiversity conservation. D) Reforestation involves changing the natural habitats of species. Show Answer Correct Answer: A) Reforestation plays a crucial role in biodiversity conservation by restoring degraded forest ecosystems, providing habitats for various species, and helping to mitigate climate change. 10. Biodiversity can affect the stability of ecosystems and the sustainability of populations. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. A. More than 70 percent of all the species recorded are animals.B.Out of every 10 animals on this planet, 7 are insects.C.The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.D.Number of fishes is very less than that of mammals. A) All correct. B) All incorrect. C) A, B and C are correct. D) Only D is correct. Show Answer Correct Answer: C) A, B and C are correct. 12. What is a wildlife corridor? A) A type of road for wildlife to travel on. B) A designated area for hunting wildlife. C) A type of zoo for wild animals. D) A strip of habitat that connects isolated populations of wildlife. Show Answer Correct Answer: D) A strip of habitat that connects isolated populations of wildlife. 13. What are the effects of pollution on ecosystems and biodiversity? A) Pollution improves habitat quality and increases species diversity. B) Pollution has no effect on food chains or ecosystems. C) Pollution enhances the resilience of ecosystems and biodiversity. D) Pollution leads to habitat degradation, loss of species, and disruption of food chains, negatively impacting ecosystems and biodiversity. Show Answer Correct Answer: D) Pollution leads to habitat degradation, loss of species, and disruption of food chains, negatively impacting ecosystems and biodiversity. 14. An example of a renewable resource is A) Oil. B) Natural gas. C) Coal. D) Trees. Show Answer Correct Answer: D) Trees. 15. In the past hundred years, biodiversity around the world has ..... dramatically? A) Increased. B) Decreased. C) All the above. D) None of the above. Show Answer Correct Answer: B) Decreased. 16. Which of the following is an index used to calculate richness and evenness to measure biodiversity? A) Genetic diversity. B) Ecosystem diversity. C) Biodiversity Calculator. D) Shannon Weiner. Show Answer Correct Answer: D) Shannon Weiner. 17. Which is more likely to become endangered? A) Specialists. B) Generalists. C) Both are likely. D) Both are not likely. Show Answer Correct Answer: A) Specialists. 18. When the value of regression coefficient z lies in the range of 0.6 to 1.2, we will find, the slope of the line to be ..... A) More gentle. B) More steeper. C) All the above. D) None of the above. Show Answer Correct Answer: B) More steeper. 19. Propose a strategy to mitigate the effects of habitat fragmentation on biodiversity. A) Building more roads through natural habitats. B) Creating wildlife corridors to connect fragmented habitats. C) Increasing urban development in rural areas. D) Introducing more invasive species. Show Answer Correct Answer: B) Creating wildlife corridors to connect fragmented habitats. 20. Which is referred to as Lungs of the Planet Earth'? A) Western ghat. B) Lake Victoria. C) Greenland. D) Amazon Rain forest. Show Answer Correct Answer: D) Amazon Rain forest. 21. Humans are causing extiction in which ways? A) By over hunting animals for food or products. B) By destroying the natural habitat of species. C) By polluting the environments of the world. D) All of the above. Show Answer Correct Answer: D) All of the above. 22. A temporary change in environmental conditions that causes a pronounced change in an ecosystem A) Ecological disturbance. B) Invasive. C) Indicator. D) Native. Show Answer Correct Answer: A) Ecological disturbance. 23. ..... is the gradual process of species becoming extinct. A) Extinction. B) Background extinction. C) Mass extinction. D) Species extinction. Show Answer Correct Answer: B) Background extinction. 24. All living and nonliving things in an environment and the many ways they interact are called ..... A) Ecosystem. B) Community. C) All the above. D) None of the above. Show Answer Correct Answer: A) Ecosystem. 25. Which of the following is a major threat to biodiversity? A) Planting more trees. B) Deforestation. C) Recycling waste. D) Using bicycles. Show Answer Correct Answer: B) Deforestation. ← 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