This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 15 Biodiversity And Conservation – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The gradual process of species becoming extinct A) Background extinction. B) Overexploitation. C) Mass extinction. D) Eutrophication. Show Answer Correct Answer: A) Background extinction. 2. What is background extinction? A) The process of species becoming extinct gradually. B) The extinction of a large percentage of species in a short period. C) The introduction of new species to a habitat. D) The separation of an ecosystem into small areas. Show Answer Correct Answer: A) The process of species becoming extinct gradually. 3. The one horned rhinoceros is specific to which of the following sanctuary A) Bhitar kanika. B) Bandipur. C) Kaziranga. D) Corbett park. Show Answer Correct Answer: C) Kaziranga. 4. What is a US act (1900) that prohibits transport of illegally harvested game animals (mostly birds and animals) across state lines-also includes plants? A) Jones Act. B) Smith Act. C) Lacey Act. D) Johnson Act. Show Answer Correct Answer: C) Lacey Act. 5. The use of living natural organisms to detoxify a polluted area? A) Biological Augmentation. B) Introduced Species. C) Bioremediation. D) None of the above. Show Answer Correct Answer: C) Bioremediation. 6. Which of the following are placed under Protista- A) Chryosophytes and Dinoflagellates. B) Euglenoids. C) Slime moulds and protozoans. D) All. Show Answer Correct Answer: D) All. 7. Which of the following forbids the U.S. government and its citizens from harming endangered or threatened species and their habitats? A) Species Survival Plan. B) The Environmental Protection Agency. C) The Endangered Species Act. D) The Convention on International Trade in Endangered Species. Show Answer Correct Answer: C) The Endangered Species Act. 8. Illegal hunting for profit is called A) Sport hunting. B) Subsistence hunting. C) Poaching. D) Commercial hunting. Show Answer Correct Answer: C) Poaching. 9. Which of the following is an example of a method for managing whole ecosystems and habitats? A) Mapping biodiversity hotspots. B) Captive breeding. C) Cloning. D) Species survival plans. Show Answer Correct Answer: A) Mapping biodiversity hotspots. 10. An ecosystem is more resilient if it has more ..... A) Biodiversity. B) Animals. C) Invasive species. D) None of the above. Show Answer Correct Answer: A) Biodiversity. 11. This occurs when organisms move out of an ecosystem that is in chaos. A) Birth Rate. B) Emmigration. C) Death Rate. D) Immigration. Show Answer Correct Answer: B) Emmigration. 12. Why are orangutans losing their habitats and becoming endangered. A) Poaching. B) Phosphates. C) Palm oil. D) Primary succession. Show Answer Correct Answer: C) Palm oil. 13. What role do zoos and botanical gardens play in biodiversity conservation? A) Selling endangered species for profit. B) Destroying natural habitats. C) Using animals and plants for entertainment purposes only. D) Preserving and protecting endangered species, conducting research, and educating the public. Show Answer Correct Answer: D) Preserving and protecting endangered species, conducting research, and educating the public. 14. Water pollution from nitrogen-rich and phosphorous-rich substances flowing into waterways, causing algal overgrowth. A) Eutrophication. B) Biological Magnification. C) Edge Effect. D) Invasive Species. Show Answer Correct Answer: A) Eutrophication. 15. Extinction describes the disappearance of a(n) ..... from an ecosystem. A) Organism. B) Species from the biosphere. C) Organism from the biosphere. D) Species from an ecosystem. Show Answer Correct Answer: D) Species from an ecosystem. 16. Pollutants in the water cycle can cause rain to A) Become more acidic than normal. B) Change from basic to acidic. C) Be saturated with particulates. D) Fall heavily and cause flooding. Show Answer Correct Answer: A) Become more acidic than normal. 17. The three important components of biodiversity are: A) Genetic diversity, species diversity, ecosystem diversity. B) Ecosystem diversity, water diversity, energy diversity. C) Species diversity, climate diversity, population diversity. D) Genetic diversity, habitat diversity, food diversity. Show Answer Correct Answer: A) Genetic diversity, species diversity, ecosystem diversity. 18. Spanish brown bear lives in ..... A) In mountains and forest. B) In the sea. C) In trees in forest. D) In my house. Show Answer Correct Answer: A) In mountains and forest. 19. India has more than ..... genetically different strains of rice. A) 15, 000. B) 50, 000. C) 500. D) 5, 000. Show Answer Correct Answer: B) 50, 000. 20. Loss of biodiversity in a region may lead to all, except A) Decline in plant productivity. B) Reduced resistance to environmental disturbances. C) Increase in resistance to invasions by alien species. D) Variability of ecosystem processes. Show Answer Correct Answer: C) Increase in resistance to invasions by alien species. 21. Why are frogs sensitive to pollutants in water? A) They have a small body mass. B) They have water-soluble skins. C) They are not an indicator species. D) They need low-oxygen conditions. Show Answer Correct Answer: B) They have water-soluble skins. 22. What is extinction? A) The complete disappearance of a species from Earth. B) The process of replanting trees in a deforested area. C) The introduction of a new species to an ecosystem. D) The process by which a species becomes more abundant. Show Answer Correct Answer: A) The complete disappearance of a species from Earth. 23. A major reason for the loss of biodiversity is that natural habitats are being destroyed? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Biodiversity of a geographical region represents A) Species endemic to the region. B) The diversity in the organisms living in the region. C) Genetic diversity in the dominant species of the region. D) Endangered species found in the region. Show Answer Correct Answer: B) The diversity in the organisms living in the region. 25. Name three methods used for conserving biodiversity. A) Protected areas, habitat restoration, sustainable resource management. B) Genetic engineering, artificial selection, monoculture. C) Overfishing, urban development, pollution control. D) Deforestation, industrial farming, climate change mitigation. Show Answer Correct Answer: A) Protected areas, habitat restoration, sustainable resource management. 26. Relieving a nation from repaying some of the money it owes other nations in exchange for protecting its biodiversity is called a A) Species Survival Plan. B) Conservation concession. C) Debt-for-nature swap. D) Wildlife corridor. Show Answer Correct Answer: C) Debt-for-nature swap. 27. A reason why wild animals attack farms is: A) To protect their habitat. B) Due to conservation efforts. C) Increase in wild population. D) Easy access to food. Show Answer Correct Answer: D) Easy access to food. 28. Pollution damages ecosystems and decreases biodiversity by doing what? A) Causing genetic diversity. B) Causing species diversity. C) Releasing harmful substances. D) None of the above. Show Answer Correct Answer: C) Releasing harmful substances. 29. How can habitat corridors benefit biodiversity? A) By isolating species from one another. B) By reducing the number of species. C) By increasing the amount of edge effects. D) By providing safe pathways for animals to move between habitat fragments. Show Answer Correct Answer: D) By providing safe pathways for animals to move between habitat fragments. 30. The use of living organisms to remove toxins from a polluted area. A) Edge Effect. B) Eutrophication. C) Bioremediation. D) Biological magnification. Show Answer Correct Answer: C) Bioremediation. 31. A forest in a tropical region like Ecuador has up to 10 times as many species of vascular plants as a forest of equal area in a temperate region like the Midwest of the USA. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 32. Which one of the following is related to exsitu conservation of threatened animals and plants A) Wildlife Safari parks. B) Biodiversity Hotspots. C) Amazon rainforest. D) Himalayan region. Show Answer Correct Answer: A) Wildlife Safari parks. 33. What is common to the techniques (1) in vitro fertilization (2) Cryopreservation (3) tissue culture A) All are in situ conservation methods. B) All are ex situ conservation methods. C) All required ultra modern equipment and large space. D) All are methods of conservation of extinct organisms. Show Answer Correct Answer: B) All are ex situ conservation methods. 34. Globally, the leading cause of biodiversity loss is A) Invasive species. B) Poaching and overharvesting. C) Pollution. D) Habitat change and loss. Show Answer Correct Answer: D) Habitat change and loss. 35. The variety of species in a particular area is known as: A) Species variety. B) Biospeciation. C) Species assortment. D) Biodiversity. Show Answer Correct Answer: D) Biodiversity. 36. When animals are placed in controlled or restrictive environments, they A) Have a low rate of genetic disorders because their gene pool is large. B) Are less likely to compete. C) May have difficulty meeting their basic survival needs. D) Become immune to infectious diseases that are common in the wild. Show Answer Correct Answer: C) May have difficulty meeting their basic survival needs. 37. Sacred grooves should be conserved since they help in conserving biodiversity ex situ. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 38. Climate Change is becoming a cause of biodiversity loss A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. The greatest cause of biodiversity loss today is A) Pollution. B) Habitat loss and change. C) Climate Change. D) Invasive species. Show Answer Correct Answer: B) Habitat loss and change. 40. Is extinction a natural process? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 41. This is the disappearance of a particular population from a given area, but not the entire species globally. A) Evacuation. B) Extinction. C) Evaluation. D) Extirpation. Show Answer Correct Answer: D) Extirpation. 42. What is the current rate of extinction compared to the normal background rate? A) 100 times higher. B) 10 times higher. C) No change in extinction rate. D) 1000 times higher. Show Answer Correct Answer: D) 1000 times higher. 43. The first organisms to move into an area where primary succession is occurring are called ..... A) Pioneer species. B) Honey bees. C) Explorer species. D) Orangutans. Show Answer Correct Answer: A) Pioneer species. 44. In the species area relationship equation, log S= log C+ Z log A, C represents? A) Constant. B) Competition. C) Y intercept. D) Slope of the line. Show Answer Correct Answer: C) Y intercept. 45. Tigers living in warm climates have thinner coast of fur than tigers living in cool climates. This is a result of A) Species diversity. B) Ecosystem diversity. C) Genetic diversity. D) General diversity. Show Answer Correct Answer: C) Genetic diversity. 46. Which is the most direct way in which biodiversity can provide a source of income? A) Research. B) Medicines. C) Ecotourism. D) Agriculture. Show Answer Correct Answer: C) Ecotourism. 47. A region that includes tigers, eagles, lizards, fish, rabbits, and many other types of organisms would be described as having a high level of A) Genetic diversity. B) Species diversity. C) Taxonomic diversity. D) Ecosystem diversity. Show Answer Correct Answer: B) Species diversity. 48. High biodiversity in an ecosystem eliminates all diseases that could harm plants or animals. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 49. What role do protected areas play in conservation? A) Protected areas are designed to promote urban expansion. B) Protected areas play a crucial role in conserving biodiversity and ecosystems. C) Protected areas are mainly for agricultural development. D) Protected areas primarily serve as tourist attractions. Show Answer Correct Answer: B) Protected areas play a crucial role in conserving biodiversity and ecosystems. 50. Based on the passage, what is the typical range of Z values for species-area relationships regardless of the taxonomic group or region? A) 1.0 to 2.0. B) 0.2 to 0.6. C) 0.6 to 1.2. D) 0.1 to 0.2. Show Answer Correct Answer: D) 0.1 to 0.2. 51. The differences in DNA among individuals within species and populations is called (a) A) Biodiversity. B) A. genetic diversity. C) Treaty. D) Captive breeding. E) Biome. Show Answer Correct Answer: B) A. genetic diversity. 52. The variation in Rauwolfia vomitoria growing in different Himalayan regions is an example of A) Genetic diversity. B) Species diversity. C) Species diversity. D) None of the above. Show Answer Correct Answer: A) Genetic diversity. 53. How do Amphibians breath? A) Gills. B) Blow Hole. C) Gills and Lungs. D) Lungs. Show Answer Correct Answer: C) Gills and Lungs. 54. The variety of genes present in a population A) Extinction. B) Ecosystem diversity. C) Genetic diversity. D) Species diversity. Show Answer Correct Answer: C) Genetic diversity. 55. Any material or organism in the biosphere, including water, soil, fuel, and plants and animals. A) Background Extinction. B) Mass Extinction. C) Overexploitation. D) Natural Resource. Show Answer Correct Answer: D) Natural Resource. 56. The excessive use, or overuse, of a species, often leading to extinction. A) Overusification. B) Overbioviolation. C) Overexploitation. D) Overexcitation. Show Answer Correct Answer: C) Overexploitation. 57. What is the name of a common biodiversity index? A) Living. B) Carr. C) Elton. D) Simpson. Show Answer Correct Answer: D) Simpson. 58. The separation of a habitat into small pieces of land is called ..... A) Habitat. B) Habitat Fragmentation. C) Corridors. D) Human interference. Show Answer Correct Answer: B) Habitat Fragmentation. 59. The greatest threat to biodiversity is ..... A) Human overpopulation. B) Habitat descruction. C) Invasive species. D) Pollution. Show Answer Correct Answer: B) Habitat descruction. 60. How can education promote the conservation of biodiversity? A) Education promotes the conservation of biodiversity by raising awareness, teaching sustainable practices, and encouraging community involvement. B) Education has no impact on environmental issues. C) Education only focuses on economic growth without considering ecology. D) Education reduces biodiversity by promoting urban development. Show Answer Correct Answer: A) Education promotes the conservation of biodiversity by raising awareness, teaching sustainable practices, and encouraging community involvement. ← 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