This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 15 Biodiversity And Conservation – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Loss of biodiversity in a region may lead to all, except A) Decline in plant productivity. B) Reduced resistance to environmental disturbances. C) Variability of ecosystem processes. D) Increase in resistance to invasions by alien species. Show Answer Correct Answer: D) Increase in resistance to invasions by alien species. 2. 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. 3. What is extinction? A) The process by which a species becomes more abundant. B) The complete disappearance of a species from Earth. C) The introduction of a new species to an ecosystem. D) The process of replanting trees in a deforested area. Show Answer Correct Answer: B) The complete disappearance of a species from Earth. 4. 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. 5. Biodiversity of a geographical region represents A) Endangered species found in the region. B) The diversity in the organisms living in the region. C) Genetic diversity in the dominant species of the region. D) Species endemic to the region. Show Answer Correct Answer: B) The diversity in the organisms living in the region. 6. Name three methods used for conserving biodiversity. A) Overfishing, urban development, pollution control. B) Deforestation, industrial farming, climate change mitigation. C) Protected areas, habitat restoration, sustainable resource management. D) Genetic engineering, artificial selection, monoculture. Show Answer Correct Answer: C) Protected areas, habitat restoration, sustainable resource management. 7. Relieving a nation from repaying some of the money it owes other nations in exchange for protecting its biodiversity is called a A) Debt-for-nature swap. B) Conservation concession. C) Species Survival Plan. D) Wildlife corridor. Show Answer Correct Answer: A) Debt-for-nature swap. 8. A reason why wild animals attack farms is: A) To protect their habitat. B) Due to conservation efforts. C) Easy access to food. D) Increase in wild population. Show Answer Correct Answer: C) Easy access to food. 9. 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. 10. How can habitat corridors benefit biodiversity? A) By reducing the number of species. B) By providing safe pathways for animals to move between habitat fragments. C) By increasing the amount of edge effects. D) By isolating species from one another. Show Answer Correct Answer: B) By providing safe pathways for animals to move between habitat fragments. 11. The use of living organisms to remove toxins from a polluted area. A) Biological magnification. B) Bioremediation. C) Edge Effect. D) Eutrophication. Show Answer Correct Answer: B) Bioremediation. 12. 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. 13. Which one of the following is related to exsitu conservation of threatened animals and plants A) Biodiversity Hotspots. B) Amazon rainforest. C) Himalayan region. D) Wildlife Safari parks. Show Answer Correct Answer: D) Wildlife Safari parks. 14. 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. 15. 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. 16. The variety of species in a particular area is known as: A) Biospeciation. B) Biodiversity. C) Species variety. D) Species assortment. Show Answer Correct Answer: B) Biodiversity. 17. When animals are placed in controlled or restrictive environments, they A) Become immune to infectious diseases that are common in the wild. B) May have difficulty meeting their basic survival needs. C) Have a low rate of genetic disorders because their gene pool is large. D) Are less likely to compete. Show Answer Correct Answer: B) May have difficulty meeting their basic survival needs. 18. 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. 19. 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. 20. 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. 21. Is extinction a natural process? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. This is the disappearance of a particular population from a given area, but not the entire species globally. A) Extinction. B) Extirpation. C) Evacuation. D) Evaluation. Show Answer Correct Answer: B) Extirpation. 23. What is the current rate of extinction compared to the normal background rate? A) 10 times higher. B) 100 times higher. C) 1000 times higher. D) No change in extinction rate. Show Answer Correct Answer: C) 1000 times higher. 24. The first organisms to move into an area where primary succession is occurring are called ..... A) Pioneer species. B) Honey bees. C) Orangutans. D) Explorer species. Show Answer Correct Answer: A) Pioneer species. 25. 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. ← 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