This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 15 Biodiversity And Conservation – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The human diet has been enriched with native food products such as sweet potatoes, beans, tomatoes and corn that come from A) Pacific Islands. B) Southwest Asia. C) Madagascar and Africa. D) Central and South America. Show Answer Correct Answer: D) Central and South America. 2. What impact does climate change have on species? A) It threatens species that cannot adapt to temperature changes. B) It increases the availability of natural resources. C) It reduces the rate of species extinction. D) It helps species adapt to new environments. Show Answer Correct Answer: A) It threatens species that cannot adapt to temperature changes. 3. Which of the following is most important cause of animals and plants being driven to extinction A) Habitat loss and fragmentation. B) Co extinctions. C) Over exploitation. D) Alien species invasion. Show Answer Correct Answer: A) Habitat loss and fragmentation. 4. Which would be a direct effect caused by habitat fragmentation? A) Waterfowl unable to breed due to a drained wetland. B) Harvested trees result in less leaf litter for rich soil. C) Box turtles separated by a road and unable to mate. D) Jaguars unable to find enough food in smaller forests. Show Answer Correct Answer: C) Box turtles separated by a road and unable to mate. 5. The species-area relationship on a logarithmic scale (logscale) is A) Rectangular parabola. B) Rectangular hyperbola. C) Straight line/linear. D) Sigmoid. Show Answer Correct Answer: C) Straight line/linear. 6. IUCN stands for: A) Indian union for conservation of Nature. B) Indian union for chemical Nomenclature. C) International Union for conservation nature and natural resources. D) International Union for Conservation of nutrients. Show Answer Correct Answer: C) International Union for conservation nature and natural resources. 7. The killing of animals for use of most of its body, including food, leather (skin), fur, etc. A) Overharvesting. B) Hunting. C) Pollution. D) Climate change. Show Answer Correct Answer: B) Hunting. 8. Find out the correct option w.r.t. number of plant and animal species recorded in India. A) 45000, 50000. B) 1, 00, 000, 3, 00, 000. C) 45000, 91000. D) 1400, 1, 25, 000. Show Answer Correct Answer: C) 45000, 91000. 9. The gradual process of species becoming extinct is known as: A) Mass extinction. B) Bio extinction. C) Gradual extinction. D) Background extinction. Show Answer Correct Answer: D) Background extinction. 10. The type of hunting that threatens species survival the most is A) Sanctioned by industrialized nations. B) Legal hunting done by sports enthusiasts. C) Ignored by global conservation groups. D) Especially a problem in less developed nations. Show Answer Correct Answer: D) Especially a problem in less developed nations. 11. Western ghats have a greater number of amphibian species than the Eastern ghats. What kind of diversity does it represent? A) Species diversity. B) Genetic diversity. C) Ecological diversity. D) None of these. Show Answer Correct Answer: A) Species diversity. 12. The number of different species and the abundance of each species in a biological community. A) Genetic diversity. B) Ecosystem diversity. C) Extinction. D) Species diversity. Show Answer Correct Answer: D) Species diversity. 13. What is ecological restoration? A) The process of converting natural habitats into urban areas. B) The practice of returning ecosystems to their original state. C) The introduction of non-native species to an ecosystem. D) The removal of all human activities from an ecosystem. Show Answer Correct Answer: B) The practice of returning ecosystems to their original state. 14. What is the main goal of conservation efforts? A) To make more money. B) To protect and preserve species and habitats. C) To build more cities. D) To use more natural resources. Show Answer Correct Answer: B) To protect and preserve species and habitats. 15. Biodiversity varies along a latitudinal gradient. Where do we see the most biodiversity? A) At the poles. B) Along the equator. C) Between the poles and the equator. D) None of the above. Show Answer Correct Answer: B) Along the equator. 16. Define genetic diversity A) Variation of genes within a species or population in a given area. B) Variety of ecosystems in a given area. C) System made up of all the living and nonliving things in a given area. D) Disturbance in the environment conditions that cause genetic changes to occur in organisms. Show Answer Correct Answer: A) Variation of genes within a species or population in a given area. 17. List three major threats to biodiversity. A) Natural disasters, overfishing, urbanization. B) Overpopulation, deforestation, invasive species. C) Agricultural expansion, mining, water scarcity. D) Habitat loss, pollution, climate change. Show Answer Correct Answer: D) Habitat loss, pollution, climate change. 18. What is a primary threat to biodiversity? A) Increased use of technology. B) Habitat destruction. C) Improved healthcare. D) Urban development.TagsDOK Level 1:Recall. Show Answer Correct Answer: B) Habitat destruction. 19. All of the materials and organisms found in the biosphere, including minerals, fossil fuels, plants, and animals A) Ecosystem. B) Habitat. C) Biodiversity. D) Natural resources. Show Answer Correct Answer: D) Natural resources. 20. Define species diversity and provide an example of a species-rich ecosystem. A) Species diversity refers to the variety of genes within a species. B) The Amazon Rainforest is an example of a species-rich ecosystem. C) Species diversity is the number of individuals within a species. D) The Sahara Desert is an example of a species-rich ecosystem. Show Answer Correct Answer: B) The Amazon Rainforest is an example of a species-rich ecosystem. 21. How does reforestation help biodiversity? A) Reforestation has no impact on ecosystems or species diversity. B) Reforestation causes a decline in plant species and loss of habitat. C) Reforestation decreases soil quality and harms local wildlife. D) Reforestation increases biodiversity by restoring habitats, enhancing species diversity, and improving ecosystem resilience. Show Answer Correct Answer: D) Reforestation increases biodiversity by restoring habitats, enhancing species diversity, and improving ecosystem resilience. 22. Among some of the recent extinctions, Thylacine is from which of the following places? A) Mauritius. B) Africa. C) Australia. D) None of the above. Show Answer Correct Answer: C) Australia. 23. Which product is often derived from the natural environment? A) Cooking oiol. B) Medicines. C) Fuel. D) All of the above. Show Answer Correct Answer: D) All of the above. 24. What is the difference between threatened and endangered species? A) Threatened species are extinct, while endangered species are not. B) Threatened species are at risk of becoming endangered, while endangered species are at risk of extinction. C) Threatened species are invasive, while endangered species are native. D) There is no difference between threatened and endangered species. Show Answer Correct Answer: B) Threatened species are at risk of becoming endangered, while endangered species are at risk of extinction. 25. There are holm oak trees all over this region A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. ← 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