2012 · Paper V · 10 marksFrequently asked

Discuss briefly various reasons leading to the loss of bio-diversity.

In short

Biodiversity is lost mainly through habitat destruction and fragmentation, overexploitation of plants and animals, invasive alien species such as water hyacinth and Lantana, and co-extinctions that cascade through dependent species. In Andhra Pradesh, overfishing on the coast and forest fragmentation show how these drivers erode ecosystem services and livelihoods.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
Biodiversity loss, driven by habitat destruction, over-exploitation, invasive species, and socio-economic factors, threatens ecological balance, ecosystem services, and human livelihoods globally and in India.
Causes and Impacts
•

Habitat Fragmentation and Conflict

In Assam and Karnataka, landscape fragmentation1 causes human-elephant conflict2 and mortality hotspots, while South India’s corridor fragmentation disrupts species movement, intensifying biodiversity loss. For example, in Andhra Pradesh, forest conversion for agriculture and aquaculture fragments habitats, threatening species like the Asian elephant, whose small population in the state survives mainly in the Rayala Elephant Reserve.

•

Development-Induced Disruption

Large-scale projects such as the Great Nicobar Project3 cause biocultural disruption and biodiversity loss, illustrating how infrastructure development impacts ecosystems and indigenous communities. This highlights the need for environmental impact assessments and inclusive planning.

•

Conservation vs Displacement

Sanctuary creation in Saranda4 forest shows tensions between biodiversity protection and tribal displacement, underscoring socio-environmental dilemmas. The Mani Shankar Aiyar Committee (2012) emphasized holistic empowerment of forest communities to balance conservation with livelihoods.

•

Advanced Monitoring and Policy

DNA-based5 elephant census improves biodiversity assessment accuracy, enabling better conservation strategies. The committee also advocates sustainable resource use and community participation to mitigate biodiversity loss effectively.

Conclusion
Addressing biodiversity loss requires balancing conservation with community rights, controlling invasive species, and adopting innovative monitoring and sustainable policies. Integrated efforts aligned with sustainable development goals will ensure long-term ecological and social resilience, embodying "Sabka Saath Sabka Vikas": collective effort for inclusive progress.

This model answer is indicative and the model can make mistakes; please verify key facts independently.

Hand-drawn diagram: Drivers of biodiversity loss. Drivers of biodiversity loss. Diagram (fishbone): Drivers of biodiversity loss; Loss of biodiversity; Habitat loss and fragmentation; Over-exploitation; Alien species invasion; Co-extinctions; Human-caused mortality
Diagram: Drivers of biodiversity loss

Practise this question

  1. 1Get the answer sheet

    Sized for this question.

  2. 2Write your answer

    Timed, by hand.

  3. 3Get it marked

    Your score and what to fix.

Share this questionWhatsAppTelegramXLinkedIn

This chapter in the exam

Biotechnology & Nanotechnology: scope, ethics, genetic engineering, biodiversity, fermentation, immuno-diagnosis50 questions

Asked in 8 of 8 sittings since 2008

2008
7
2011
5
2012
7
2016
13
2017
9
2020
3
2023
3
2025
3

Most tested: Biodiversity and biotechnology governance/ethics, especially conservation, GMOs, and applied public-health biotech.

All 50 questions, sorted by sub-topic, with model answers and practice.

Question from the official APPSC Group-I Mains 2012 paper. Answer written by Ghissu's engine and checked against our editorial standards. Found an error? Tell us and we correct it within 48 hours.

Ghissu

OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·
OUTWORK·
OUTTHINK·
MASTER THE SYSTEM·