UPSC Environment Quiz – Biodiversity (Part 2)
Welcome to this comprehensive Biodiversity MCQ quiz designed specifically for UPSC aspirants. Biodiversity is a crucial topic under the environment section, encompassing the variety of life forms on Earth and their ecological significance. Understanding biodiversity helps candidates grasp the interdependence of species and the importance of conservation efforts. This quiz contains medium-difficulty questions aimed at testing your knowledge and analytical skills on biodiversity concepts, types, threats, and global initiatives. Attempt all questions carefully before revealing the answers to enhance your learning experience and improve your exam readiness. This practice will help you solidify key concepts and prepare effectively for the UPSC environment paper.
Quick Facts
- Biodiversity refers to the variety of all life forms on Earth, including plants, animals, and microorganisms.
- There are three levels of biodiversity: genetic, species, and ecosystem diversity.
- The Convention on Biological Diversity (CBD) is an international treaty aimed at conserving biodiversity.
- Hotspots like the Western Ghats and Himalayas are rich in endemic species in India.
- Habitat loss, climate change, pollution, and invasive species are major threats to biodiversity.
- Biodiversity plays a critical role in ecosystem services such as pollination, water purification, and soil fertility.
- India is one of the 17 megadiverse countries in the world.
- Protected areas like national parks and wildlife sanctuaries help conserve biodiversity.
Q1. Which of the following is NOT a recognized level of biodiversity?
- A) Genetic diversity
- B) Species diversity
- C) Ecosystem diversity
- D) Behavioral diversity
Show Answer
Answer: D) Behavioral diversity
Explanation: The three recognized levels of biodiversity are genetic, species, and ecosystem diversity. Behavioral diversity is not classified as a separate level but may be considered within genetic or species diversity contexts.
Q2. The term ‘biodiversity hotspot’ was coined by which organization?
- A) United Nations Environment Programme (UNEP)
- B) World Wide Fund for Nature (WWF)
- C) Conservation International (CI)
- D) International Union for Conservation of Nature (IUCN)
Show Answer
Answer: C) Conservation International (CI)
Explanation: The term ‘biodiversity hotspot’ was introduced by Norman Myers in 1988 and popularized by Conservation International to identify regions with significant levels of endemic species under threat.
Q3. Which Indian biodiversity hotspot is known for its rich endemic species and is part of the Western Ghats?
- A) Sundarbans
- B) Nilgiri Biosphere Reserve
- C) Eastern Himalayan Region
- D) Deccan Plateau
Show Answer
Answer: B) Nilgiri Biosphere Reserve
Explanation: The Nilgiri Biosphere Reserve is part of the Western Ghats and is known for its exceptional biodiversity and many endemic species, making it a crucial hotspot in India.
Q4. The Convention on Biological Diversity (CBD) was adopted during which international event?
- A) Earth Summit, Rio de Janeiro 1992
- B) Kyoto Protocol, 1997
- C) Paris Agreement, 2015
- D) Stockholm Conference, 1972
Show Answer
Answer: A) Earth Summit, Rio de Janeiro 1992
Explanation: The CBD was adopted at the Earth Summit held in Rio de Janeiro in 1992, aiming to conserve biodiversity, sustainable use of its components, and fair sharing of benefits.
Q5. Which of the following is a major cause of biodiversity loss globally?
- A) Habitat fragmentation
- B) Increased genetic diversity
- C) Sustainable agriculture
- D) Ecotourism development
Show Answer
Answer: A) Habitat fragmentation
Explanation: Habitat fragmentation divides ecosystems into smaller patches, reducing species populations and genetic exchange, thereby causing significant biodiversity loss worldwide.
Q6. What is the primary objective of the National Biodiversity Act, 2002 in India?
- A) Regulate hunting of wildlife
- B) Conserve biological diversity and ensure sustainable use
- C) Promote industrial development in forest areas
- D) Facilitate export of endangered species
Show Answer
Answer: B) Conserve biological diversity and ensure sustainable use
Explanation: The National Biodiversity Act, 2002 aims to conserve India’s rich biodiversity, regulate access to biological resources, and promote sustainable use and equitable sharing of benefits.
Q7. Which one of the following species is considered a ‘keystone species’ in Indian forests?
- A) Bengal Tiger
- B) Indian Star Tortoise
- C) Nilgai
- D) Indian Cobra
Show Answer
Answer: A) Bengal Tiger
Explanation: The Bengal Tiger is a keystone species that maintains the balance of the ecosystem by controlling prey populations and supporting biodiversity in Indian forests.
Q8. Which of the following is NOT an ecosystem service provided by biodiversity?
- A) Pollination of crops
- B) Climate regulation
- C) Increased carbon emissions
- D) Soil fertility maintenance
Show Answer
Answer: C) Increased carbon emissions
Explanation: Biodiversity contributes to ecosystem services like pollination, climate regulation, and soil fertility. Increased carbon emissions are a negative impact, not a service provided by biodiversity.
Q9. The IUCN Red List classifies species based on their risk of extinction. Which category indicates the highest risk?
- A) Vulnerable
- B) Near Threatened
- C) Critically Endangered
- D) Least Concern
Show Answer
Answer: C) Critically Endangered
Explanation: The ‘Critically Endangered’ category in the IUCN Red List represents species facing an extremely high risk of extinction in the wild.
Q10. Which Indian state is home to the Great Indian Bustard, a critically endangered bird species?
- A) Rajasthan
- B) Kerala
- C) Assam
- D) Himachal Pradesh
Show Answer
Answer: A) Rajasthan
Explanation: The Great Indian Bustard is primarily found in Rajasthan’s grasslands and is critically endangered due to habitat loss and hunting pressures.
Key Comparison
| Concept | Details |
|---|---|
| Levels of Biodiversity | Includes genetic diversity (variation within species), species diversity (variety of species), and ecosystem diversity (variety of habitats). |
| Biodiversity Hotspots | Regions with significant endemic species under threat; India has four hotspots including the Western Ghats and Himalayas. |
| Threats to Biodiversity | Major threats include habitat loss, fragmentation, pollution, invasive species, and climate change impacts. |
| Conservation Laws | National Biodiversity Act 2002 regulates biological resource use and promotes conservation and sustainable practices. |
Important Points
- Biodiversity is essential for maintaining ecosystem balance and providing vital ecosystem services.
- India is recognized as a megadiverse country with rich biodiversity hotspots.
- International treaties like the CBD play a crucial role in global biodiversity conservation.
- Habitat fragmentation is one of the leading causes of species extinction worldwide.
- Keystone species like the Bengal Tiger help regulate ecological communities.
- The IUCN Red List categorizes species based on their extinction risk to prioritize conservation efforts.
FAQs
What is genetic diversity and why is it important?
Genetic diversity refers to the variation of genes within a species. It is important because it allows populations to adapt to changing environments, resist diseases, and maintain overall species survival and health.
How do biodiversity hotspots benefit conservation efforts?
Biodiversity hotspots focus conservation resources on regions with high levels of endemic species and significant threats, making protection efforts more efficient and impactful in preserving unique biodiversity.
What role does the National Biodiversity Act, 2002 play in India?
The Act provides a legal framework to conserve biological resources, regulate their use, and ensure fair sharing of benefits arising from their utilization, thereby supporting sustainable biodiversity management.
Conclusion
This Biodiversity MCQ quiz has covered essential concepts such as the levels of biodiversity, biodiversity hotspots, threats, and conservation frameworks relevant to UPSC preparation. Understanding these topics deeply is vital for tackling environment-related questions effectively. Regular practice with MCQs enhances retention and analytical skills, helping you perform confidently in exams. Keep practicing more questions on biodiversity and related environment topics to strengthen your knowledge and secure a good score in the UPSC environment section.
