This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > 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 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. 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. 3. 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. 4. What is an environmental disturbance that drastically reduces population size and kills organisms regardless of their genome? A) Shannon Index. B) Ecosystem Resilience. C) Bottleneck Event. D) Inbreeding Depression. Show Answer Correct Answer: C) Bottleneck Event. 5. 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 producer population would decrease. B) The deer will not be affected. C) The white tailed deer population would increase. D) The predator population would decrease. Show Answer Correct Answer: A) The producer population would decrease. 6. ..... 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. 7. 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. 8. Overuse of species with economic value-a factor in species extinction. A) Background Extinction. B) Overexploitation. C) Mass Extinction. D) Natural Resource. Show Answer Correct Answer: B) Overexploitation. 9. What is species diversity? A) The variety of genes present in a population. B) The number of different species and their abundance in a community. C) The variety of ecosystems in the biosphere. D) The excessive use of a species with economic value. Show Answer Correct Answer: B) The number of different species and their abundance in a community. 10. Which area would have less biodiversity? A) Forest. B) Desert. C) Lake. D) Ocean. Show Answer Correct Answer: B) Desert. 11. A plan to establish an 8000km long strip of land across eight SE Asian countries to rejoin fragments of habitats is an example of A) Conservation concession. B) Captive breeding program. C) World biodiversity treaty. D) Wildlife corridor. Show Answer Correct Answer: D) Wildlife corridor. 12. Which applies to this environmental problem:The use of Earth's natural resources has more than tripled in 40 years. A) Pollution. B) Invasive Species. C) Overconsumption. D) Population Growth. E) Habitat Loss. Show Answer Correct Answer: C) Overconsumption. 13. Human threats to biodiversity include: A) Population growth. B) Pollution. C) Habitat destruction. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. Changes in one part of an ecosystem that can affect the whole ecosystem A) Pollution of habitat. B) Ecosystem diversity. C) Disruption of habitat. D) Overexploitation. Show Answer Correct Answer: C) Disruption of habitat. 15. There's been five major ones. We think this due to rapid change of climate, natural disaster (volcanic eruption, meteorite impact?), so species die as they can't survive the change in conditions. A) Keystone Species. B) Mass extinction. C) Hot Spots. D) Background Extinction. Show Answer Correct Answer: B) Mass extinction. 16. The unsustainable use of natural resources which occurs when harvesting exceeds reproduction of wild plant and animal species continues to be a major threat to biodiversity. A) Overexploitation. B) Biodiversity. C) Gamma Diversity. D) Ecosystem Diversity. Show Answer Correct Answer: A) Overexploitation. 17. Evaluate the effectiveness of protected areas in conserving biodiversity. Provide examples to support your answer. A) Protected areas are only effective in tropical regions. B) Protected areas are effective as they provide safe habitats for endangered species. C) Protected areas are ineffective because they restrict human activities. D) Protected areas have no impact on biodiversity conservation. Show Answer Correct Answer: B) Protected areas are effective as they provide safe habitats for endangered species. 18. India has only 2.4 % of the world's land area but its share of global species diversity is A) 5.1 %. B) 8.1 %. C) 1.8%. D) 3.1 %. Show Answer Correct Answer: B) 8.1 %. 19. According to the passage, among animals, which group is the most species-rich taxonomic group, making up more than 70 per cent of the total? A) Insects. B) Fishes. C) Mammals. D) Birds. Show Answer Correct Answer: A) Insects. 20. What is common to lantana, African catfish and eichhornia A) All are endangered species of India. B) All are keystone species. C) All are mammals found in India. D) All the species are neither threatened nor indigenous species of India. Show Answer Correct Answer: D) All the species are neither threatened nor indigenous species of India. 21. Which applies to this environmental problem:The albatross are dying from eating plastic items that look like food. A) Pollution. B) Habitat Loss. C) Population Growth. D) Invasive Species. E) Overconsumption. Show Answer Correct Answer: A) Pollution. 22. The stinkbug eats caterpillars which are common best for farmers. This belongs to which benefit category of biodiversity? A) Recreational. B) Agriculture. C) Aesthetics. D) Medicinal. Show Answer Correct Answer: B) Agriculture. 23. ..... affected by change, but bounce back and regain function. A) Resistant. B) Resilient. C) All the above. D) None of the above. Show Answer Correct Answer: B) Resilient. 24. Which of the following best defines species diversity? A) The diversity of genes within a population. B) The variety of species within a community or ecosystem. C) The variety of ecosystems within a geographical location. D) The range of different habitats within a particular area. Show Answer Correct Answer: B) The variety of species within a community or ecosystem. 25. Guitarist for U2 A) Adam Clayton. B) The Edge. C) Larry Mullen Jr. D) Bono. Show Answer Correct Answer: B) The Edge. 26. How does the government help restore species that are threatened or endangered? A) Prohibit "Take". B) Conserve habitat lands. C) Captive breeding programs (like in zoos). D) All of the above. Show Answer Correct Answer: D) All of the above. 27. Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring? A) Natural Selection. B) Adaptation. C) Evolution. D) Variation. Show Answer Correct Answer: A) Natural Selection. 28. Which of the following is a characteristic of an endangered species? A) It is abundant in its natural habitat. B) It is a newly discovered species. C) It is a species that has been introduced to a new habitat. D) It is at high risk of extinction in the wild. Show Answer Correct Answer: D) It is at high risk of extinction in the wild. 29. Biologists put extra effort into protecting these because they have many species living in them. A) Conservation stations. B) Biodiversity Hotspots. C) Farms. D) Cities. Show Answer Correct Answer: B) Biodiversity Hotspots. 30. How does habitat restoration contribute to biodiversity? A) Habitat restoration only benefits human activities. B) Habitat restoration has no impact on ecosystem health. C) Habitat restoration contributes to biodiversity by re-establishing native species and improving ecosystem health. D) Habitat restoration decreases the number of species in an ecosystem. Show Answer Correct Answer: C) Habitat restoration contributes to biodiversity by re-establishing native species and improving ecosystem health. 31. Which of the following equation correctly represents species-area relationship? A) Log A = log C + Z log S. B) Log C = log S + Z log A. C) Log A = log S + Z log C. D) Log S = log C + Z log A. Show Answer Correct Answer: D) Log S = log C + Z log A. 32. Why are keystone species important in ecosystems? A) They are the only species that can survive in harsh conditions. B) They help maintain the structure and balance of an ecosystem. C) They are the primary producers in an ecosystem. D) They are always the largest predators. Show Answer Correct Answer: B) They help maintain the structure and balance of an ecosystem. 33. How does habitat destruction affect wildlife? A) Habitat destruction negatively impacts wildlife by causing habitat loss, food scarcity, population decline, and increased risk of extinction. B) Habitat destruction has no effect on wildlife populations. C) Wildlife thrives in areas that have experienced habitat destruction. D) Habitat destruction creates more food sources for wildlife. Show Answer Correct Answer: A) Habitat destruction negatively impacts wildlife by causing habitat loss, food scarcity, population decline, and increased risk of extinction. 34. An organism that is native to one specific geographic area. A) Common. B) Endemic. C) Endangered. D) Pandemic. Show Answer Correct Answer: B) Endemic. 35. Which of the below mentioned regions exhibit less seasonal variations A) Tropics. B) Temperate. C) Alpines. D) Both a and b. Show Answer Correct Answer: A) Tropics. 36. What role do protected areas play in biodiversity conservation? A) None of the above. B) Promote industrial development. C) Increase urban sprawl. D) Provide habitat for wildlife and help control deforestation. Show Answer Correct Answer: D) Provide habitat for wildlife and help control deforestation. 37. Tropical dense forest is characterized by: A) Low temperature and excess rain. B) High temperature and lesser rain. C) High temperature and excess rain. D) Wild animals like tigers, lions, beats, etc. Show Answer Correct Answer: C) High temperature and excess rain. 38. The diversification came about through which process? A) Mutation only. B) Natural selection. C) Artificial selection. D) Genetic drift. Show Answer Correct Answer: B) Natural selection. 39. Red list contains data or information on A) All economically important plants. B) Plants whose products are in international trade. C) Threatened species. D) Marine vertebrates. Show Answer Correct Answer: C) Threatened species. 40. The ..... eats dead animals. A) Imperial eagle. B) Black vulture. C) Brown bear. D) Iberian wolf. Show Answer Correct Answer: B) Black vulture. 41. Which of the following is a potential consequence of overfishing? A) Increased biodiversity in marine ecosystems. B) Depletion of fish stocks and disruption of marine food webs. C) Improved water quality in oceans. D) Increased population of endangered species. Show Answer Correct Answer: B) Depletion of fish stocks and disruption of marine food webs. 42. Analyze the role of ecological restoration in enhancing biodiversity. Include specific strategies used in restoration projects. A) Ecological restoration decreases biodiversity by removing all species. B) Ecological restoration enhances biodiversity by reintroducing native species and removing invasive species. C) Ecological restoration has no impact on biodiversity. D) Ecological restoration focuses only on increasing the number of plant species. Show Answer Correct Answer: B) Ecological restoration enhances biodiversity by reintroducing native species and removing invasive species. 43. Analyze the role of keystone species in an ecosystem and provide an example of one such species. A) Keystone species are only important in marine ecosystems. B) Keystone species have no significant role in ecosystems. C) Keystone species help maintain the structure of an ecosystem by controlling populations of other species; an example is the sea otter. D) Keystone species are always predators. Show Answer Correct Answer: C) Keystone species help maintain the structure of an ecosystem by controlling populations of other species; an example is the sea otter. 44. What is one effect of overfishing on marine biodiversity? A) Decreased variety of marine species. B) Increased fish populations. C) Enhanced coral reef growth. D) More stable marine ecosystems.TagsDOK Level 2:Skill/Concept. Show Answer Correct Answer: A) Decreased variety of marine species. 45. True or False:Once extinct, a species will never naturally return. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 46. Which of the following is a consequence of losing biodiversity? A) Increased uniformity in genetic traits. B) Enhanced ecosystem resilience against environmental changes. C) Decreased ecosystem productivity and stability. D) More rapid evolution of new species.TagsDOK Level 2:Skill/Concept. Show Answer Correct Answer: C) Decreased ecosystem productivity and stability. 47. What are the benefits of biodiversity for human well-being? A) Biodiversity enhances ecosystem services, supports health, provides resources, and promotes cultural and recreational benefits. B) Biodiversity decreases ecosystem stability. C) Biodiversity has no impact on health. D) Biodiversity only benefits wildlife. Show Answer Correct Answer: A) Biodiversity enhances ecosystem services, supports health, provides resources, and promotes cultural and recreational benefits. 48. What is sustainable resource use and why is it necessary? A) Sustainable resource use is about maximizing profits from natural resources. B) Sustainable resource use is the complete depletion of natural resources for immediate needs. C) Sustainable resource use is the responsible management of natural resources to meet present and future needs. D) Sustainable resource use means using resources without any restrictions. Show Answer Correct Answer: C) Sustainable resource use is the responsible management of natural resources to meet present and future needs. 49. #1 cause of Biodiversity Loss is A) Pollution. B) Poaching/overharvesting. C) Habitat loss. D) Invasisve species. Show Answer Correct Answer: C) Habitat loss. 50. Technique using living organisms to detoxify a polluted area. A) Sustainable Use. B) Endemic. C) Bioremediation. D) None of the above. Show Answer Correct Answer: C) Bioremediation. 51. The variety of genes or inheritable characteristics that are present in a population compromises its: A) Ecosystem diversity. B) Genetic diversity. C) Biome diversity. D) Species diversity. Show Answer Correct Answer: B) Genetic diversity. 52. Evaluate the impact of pollution on aquatic biodiversity and suggest measures to reduce it. A) Pollution has no impact on aquatic biodiversity. B) Pollution decreases aquatic biodiversity by contaminating water bodies; measures include reducing industrial discharge and promoting clean-up initiatives. C) Pollution increases aquatic biodiversity by providing new habitats. D) Pollution only affects terrestrial biodiversity. Show Answer Correct Answer: B) Pollution decreases aquatic biodiversity by contaminating water bodies; measures include reducing industrial discharge and promoting clean-up initiatives. 53. Ecosystem biodiversity is best described as ..... A) The variety of different ecosystems there are in the biosphere. B) The different type of biomes there are. C) The different types of abiotic and biotic factors as well as climate within environments. D) All of these are correct. Show Answer Correct Answer: D) All of these are correct. 54. The excessive use of a species that has economic value A) Habitat loss. B) Evolving species. C) Overexploitation. D) Habitat fragmentation. Show Answer Correct Answer: C) Overexploitation. 55. It would function differently if the diversity was much less. A) No, it would function the same. B) It would function better. C) It would stop functioning completely. D) Yes, it would function differently. Show Answer Correct Answer: D) Yes, it would function differently. 56. What happens when species become extinct? A) The adults are dead but some eggs still have not hatched. B) The species do not exist in some parts of the world. C) A few are still alive. D) The whole species does not exist. Show Answer Correct Answer: D) The whole species does not exist. 57. When a species goes extinct in just one area it is called A) Endemic. B) Inbreeding. C) Extinction. D) Extirpation. Show Answer Correct Answer: D) Extirpation. 58. List the Domain and Kington based upon the following characteristics:-Eukaryotic-Mostly Unicellular, some Multicellular-Some are colonial (live in groups)-Heterotrophic or Autotrophic-Usually live in water-Usually move using cilia or flagella. A) Domain:EukaryotaKingdom:Plantae. B) Domain:EukaryotaKingdom:Eubacteria. C) Domain:Bacteria Kingdom:Eubacteria. D) Domain:EukaryotaKingdom:Protista. Show Answer Correct Answer: D) Domain:EukaryotaKingdom:Protista. 59. What is the role of seed banks in biodiversity conservation? A) Seed banks play a crucial role in biodiversity conservation by preserving genetic diversity and providing a safeguard against the extinction of plants. B) Seed banks are used for storing grains for human consumption. C) Seed banks have no role in biodiversity conservation. D) Seed banks are used for storing animal seeds. Show Answer Correct Answer: A) Seed banks play a crucial role in biodiversity conservation by preserving genetic diversity and providing a safeguard against the extinction of plants. 60. Speciation is generally a function of A) Area. B) Volume. C) Time. D) None of the above. Show Answer Correct Answer: A) Area. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books