A sandy and saline area is the natural habitat of an India animal species. The animal has no predators in that area but its existence is threatened due to the destruction of its habitat. Which one of the following could be that animal?

1. Biogeographic Zones and Faunal Diversity of India (basic)

India is one of the world’s 17 mega-diverse countries. Although it occupies only about 2.4% of the world’s land area, it accounts for a staggering 7% to 8% of all recorded species Environment, Shankar IAS Academy, Indian Biodiversity Diverse Landscape, p.151. This biological wealth is not distributed randomly; it is the result of India’s varied edaphic (soil), climatic, and topographic conditions. From the freezing heights of the Himalayas to the scorching sands of the Thar, these different environments have created unique "homes" or niches for a vast array of wildlife.

To study this systematically, we use Biogeography—the science of the geographical distribution of plants and animals. India is divided into 10 distinct Biogeographic Zones, which are further subdivided into 25 Biogeographic Provinces Environment, Shankar IAS Academy, Indian Biodiversity Diverse Landscape, p.153. Each zone represents a unique ecosystem with its own characteristic flora and fauna. For instance, the Trans-Himalaya zone, covering about 5.6% of the country, is an extension of the Tibetan plateau and consists of high-altitude cold deserts Environment and Ecology, Majid Hussain, BIODIVERSITY, p.20. Understanding these zones is crucial because many species are endemic, meaning they are found nowhere else in the world outside their specific zone.

A classic example of such specialized adaptation is found in the Desert Zone, specifically the Rann of Kutch. This region is a unique ecosystem of saline depressions and sandy plains. Here lives the Indian Wild Ass (Khur), one of the fastest land mammals in India. Unlike the Indian Wild Buffalo, which thrives in wet floodplains, or the Indian Gazelle (Chinkara), which wanders across broader arid scrub forests, the Khur is specifically adapted to the harsh, saline conditions of this restricted desert range NCERT Class IX, Natural Vegetation and Wildlife, p.43.

Biogeographic Zone	Key Characteristics	Sample Fauna
Trans-Himalaya	High altitude, cold desert	Snow Leopard, Wild Sheep
The Desert	Extremely arid; Thar & Kutch	Indian Wild Ass, Great Indian Bustard
Western Ghats	High rainfall, mountain ranges	Lion-tailed Macaque

Sources: Environment, Shankar IAS Academy, Indian Biodiversity Diverse Landscape, p.151-153; Environment and Ecology, Majid Hussain, BIODIVERSITY, p.20; NCERT Class IX Geography (Contemporary India-I), Natural Vegetation and Wildlife, p.43

2. Wildlife Protection Act and Conservation Status (basic)

To understand how we save species, we must first look at the legal and scientific frameworks that identify who is in danger. In India, the primary legal shield is the Wildlife Protection Act (WPA) of 1972. Before this act, wildlife was largely a State subject, but the WPA created a unified national framework for protection Environment, Shankar IAS Academy, Protected Area Network, p.211. This law organizes animals into Schedules based on their survival risk. Species listed under Schedule I receive the highest level of protection with the harshest penalties for violations, while poaching and illegal trade for animals in Schedules I through IV are strictly prohibited Environment, Shankar IAS Academy, Schedule Animals of WPA 1972, p.171.

While the WPA is a domestic law, the International Union for Conservation of Nature (IUCN) provides a global scientific perspective through its Red Data Book. First issued in 1966, this book acts as a 'global barometer' for biodiversity, categorizing species based on their risk of extinction Environment, Shankar IAS Academy, Biodiversity, p.147. The IUCN uses specific criteria to place species into categories such as Extinct, Critically Endangered, Endangered, and Vulnerable. For instance, a species labeled as 'Critically Endangered' is facing an extremely high risk of extinction in the wild Environment and Ecology, Majid Hussain, BIODIVERSITY, p.11.

It is important to distinguish between these two: the IUCN status is a scientific assessment of how close a species is to disappearing globally, whereas the WPA Schedule is the legal tool the Indian government uses to enforce protection on the ground. For example, a species might be globally 'Vulnerable' according to the IUCN but placed in 'Schedule I' of India's WPA to ensure it receives maximum legal protection within our borders.

Framework	Scope	Primary Output
Wildlife Protection Act, 1972	National (India)	Legal protection via Schedules
IUCN Red List	Global	Conservation status via Red Data Book

Sources: Environment, Shankar IAS Academy, Protected Area Network, p.211; Environment, Shankar IAS Academy, Schedule Animals of WPA 1972, p.171; Environment, Shankar IAS Academy, Biodiversity, p.147; Environment and Ecology, Majid Hussain, BIODIVERSITY, p.11

3. Concept of Endemism and Habitat Specificity (intermediate)

In our journey to understand biodiversity conservation, we must first master two twin concepts that define the 'vulnerability' of a species: Endemism and Habitat Specificity. Endemism refers to a state where a species is unique to a defined geographic location—such as an island, a nation, or a specific vegetation type—and is found nowhere else on Earth. For instance, in India, about 62% of amphibians and 50% of recorded lizard species are endemic, meaning if they disappear from India, they are lost to the world forever Majid Hussain, Environment and Ecology, BIODIVERSITY, p.23.

While endemism tells us where a species is, Habitat Specificity tells us how it lives. Some species are 'generalists' (like the common crow) that can survive almost anywhere. Others are 'specialists' with high habitat specificity; they require very precise environmental conditions—such as a specific soil salinity, a narrow temperature range, or a particular type of forest canopy—to survive. When a species is both endemic and a habitat specialist, it faces a 'double jeopardy.' Because it is restricted to a small area and cannot adapt to a different environment, even minor habitat degradation or fragmentation can lead to its extinction.

In India, regions like the Western Ghats and the Andaman and Nicobar Islands are 'hotspots' for such species. For example, in the Andaman Islands alone, out of 2200 recorded plant varieties, 200 are strictly endemic Majid Husain, Geography of India, Regional Development and Planning, p.90. This is why conservation efforts often shift from protecting a single animal to preserving the entire ecosystem, focusing on nesting sites, feeding areas, and breeding grounds that constitute 'critical habitats' Majid Hussain, Environment and Ecology, BIODIVERSITY, p.29.

Feature	Endemic Specialist	Widespread Generalist
Geographic Range	Restricted (e.g., a single mountain range)	Broad (e.g., across continents)
Adaptability	Low; relies on specific conditions	High; can utilize various resources
Extinction Risk	Very High (due to habitat loss)	Low (can migrate/adapt)

Sources: Environment and Ecology, Majid Hussain (Access publishing 3rd ed.), BIODIVERSITY, p.23; Geography of India ,Majid Husain, (McGrawHill 9th ed.), Regional Development and Planning, p.90; Environment and Ecology, Majid Hussain (Access publishing 3rd ed.), BIODIVERSITY, p.29

4. Arid and Semi-Arid Ecosystems of Western India (intermediate)

To understand the conservation of threatened species in Western India, we must first master the geography of their home: the Arid and Semi-Arid Ecosystems. This region is dominated by the Thar Desert (the Great Indian Desert), which covers approximately 200,000 sq km across Rajasthan, Gujarat, and parts of Haryana and Punjab. Geologically, this is a landscape of Aeolian (wind-deposited) accumulation, where sand has been shaped by the wind for over 1.8 million years into shifting dunes and sandy plains Geography of India, Majid Husain, Physiography, p.46. Interspersed among these dunes are low, barren hills known as bhakars, creating a mosaic of habitats that range from moving sands to rocky outcrops. Moving south toward Gujarat, the ecosystem transitions into the Rann of Kutch. This is not just another desert; it is a unique saline desert and seasonal salt marsh formed by the recession of the sea and wind deposition Geography of India, Majid Husain, Physiography, p.64. This hyper-saline environment creates a specialized niche for species like the Indian Wild Ass (Khur), which is endemic to these saline depressions. The vegetation throughout these regions is xerophytic, meaning plants have evolved adaptations like reduced leaves, thorns, and succulent stems to store water and survive intense heat Environment, Shankar IAS Academy, Indian Biodiversity, p.159. Water is the defining constraint of this ecosystem. The Luni River is the only major natural river in the region, originating in the Aravallis and flowing into the Rann of Kutch. However, the ecology of the Thar has been significantly altered by the Indira Gandhi Canal, which brings fresh water for irrigation, transforming many arid stretches into green agricultural belts but also changing the natural habitat for native desert species Geography of India, Majid Husain, Physiography, p.47.

Sources: Geography of India, Majid Husain, Physiography, p.46; Geography of India, Majid Husain, Physiography, p.47; Geography of India, Majid Husain, Physiography, p.64; Environment, Shankar IAS Academy, Indian Biodiversity, p.159; NCERT Contemporary India-I, Class IX, Natural Vegetation and Wildlife, p.43

5. Habitat Fragmentation and Modern Threats to Wildlife (intermediate)

In the study of conservation, we must distinguish between simple habitat loss and the more complex process of habitat fragmentation. While habitat loss refers to the outright destruction of an ecosystem, fragmentation occurs when a large, continuous habitat is broken into smaller, isolated patches, often due to human activities like road construction, agriculture, and industrialization Environment, Shankar IAS Academy, Animal Diversity of India, p.194. This creates "islands" of nature where wildlife populations become trapped, leading to genetic isolation and a higher risk of local extinction. For instance, the Indian wild ass (Khur), once found across northwestern India, is now largely restricted to the Little Rann of Kutch in Gujarat—a classic example of how habitat degradation and fragmentation can confine a species to a single refuge CONTEMPORARY INDIA-I, Geography, Class IX, WILDLIFE, p.43.

Modern threats to wildlife are categorized into direct and indirect causes. Direct causes include hunting and poaching, though these have seen a decline due to stricter laws. The more insidious threats are indirect: land-use changes, industrial advancement, and the conversion of forests for infrastructure like reservoirs and mines INDIA PHYSICAL ENVIRONMENT, Geography Class XI, Natural Vegetation, p.47. Furthermore, the biotic pressure from domestic cattle grazing and the removal of timber for fuel by local communities significantly degrade the quality of the remaining habitat, making it less suitable for specialized species. This degradation often forces wild animals into human-dominated landscapes, escalating human-wildlife conflict, which results in injury or death for both animals and people Environment and Ecology, Majid Hussain, BIODIVERSITY, p.17.

To combat these threats, conservationists advocate for ecological corridors and the restoration of marginal lands. By using social forestry on lands not suitable for crops, we can expand the available ecosystem and provide buffer zones for wildlife Geography of India, Majid Husain, Natural Vegetation and National Parks, p.55. This is particularly vital for species like the Khur, which are highly adapted to specific, harsh environments like saline deserts and cannot simply migrate to different forest types if their primary habitat is destroyed.

Sources: Environment, Shankar IAS Academy, Animal Diversity of India, p.194; CONTEMPORARY INDIA-I, Geography, Class IX, Natural Vegetation and Wildlife, p.43; INDIA PHYSICAL ENVIRONMENT, Geography Class XI, Natural Vegetation, p.47; Environment and Ecology, Majid Hussain, BIODIVERSITY, p.17; Geography of India, Majid Husain, Natural Vegetation and National Parks, p.55

6. Megafauna of the Indian Desert and Scrublands (exam-level)

The Indian desert and scrubland ecosystem, primarily encompassing the Thar Desert of Rajasthan and the Rann of Kutch in Gujarat, is a landscape of extremes. Far from being a barren void, it supports a highly specialized group of megafauna that have evolved unique physiological and behavioral adaptations to survive intense heat, water scarcity, and high salinity Shankar IAS Academy, Terrestrial Ecosystems, p.29. The hallmark of this region is the Indian Wild Ass (Equus hemionus khur), locally known as the Khur. Once found across Northwestern India and Pakistan, it is now endemic to the saline deserts and arid grasslands of the Little Rann of Kutch NCERT Class IX, Chapter 5: Natural Vegetation and Wildlife, p.43. It is one of the fastest land mammals in India, perfectly adapted to the flat, salt-encrusted plains known as 'bets' (elevated patches of land).

Another flagship species of this landscape is the Great Indian Bustard (GIB). This heavy, ground-dwelling bird is a critical indicator of the health of short-grass desert plains Majid Hussain, Environment and Ecology, p.48. Unlike the generalist herbivores found in greener forests, the GIB and the Chinkara (Indian Gazelle) are masters of the scrub. While the Chinkara can survive for long periods without drinking water (deriving moisture from plants), the GIB is currently facing an existential crisis due to habitat loss and collisions with power lines, with fewer than 150 individuals remaining in the wild Shankar IAS Academy, Terrestrial Ecosystems, p.28.

To distinguish these species for the exam, it is helpful to look at their specific niches within the arid zone:

Species	Primary Habitat	Key Characteristic
Indian Wild Ass	Saline depressions/Salt pans (Rann)	Endemic; fastest land mammal in India.
Great Indian Bustard	Short-grass plains/Arid scrub	Critically Endangered; heavy flyer.
Chinkara	Arid scrub and ravines	Widespread; survives on metabolic water.

Sources: Environment, Shankar IAS Acedemy (10th ed.), Terrestrial Ecosystems, p.28-29; NCERT Class IX, Geography (2025 ed.), Chapter 5: Natural Vegetation and Wildlife, p.43; Geography of India, Majid Husain (9th ed.), Natural Vegetation and National Parks, p.50; Environment and Ecology, Majid Hussain (3rd ed.), Biodiversity, p.48

7. Ecology of the Rann of Kutch and the Indian Wild Ass (exam-level)

The Rann of Kutch in Gujarat is one of the most remarkable ecosystems in India, characterized by a vast, seasonally marshy saline desert. This landscape is divided into the Great Rann and the Little Rann. While the Great Rann is famous as the only known nesting ground for Flamingoes in India, the Little Rann serves as the last global refuge for the Indian Wild Ass (locally known as the Khur). This animal is endemic to this region, meaning it is found nowhere else on Earth. Unlike the Indian wild buffalo, which thrives in wet floodplains, or the Indian gazelle (Chinkara), which occupies a broader range of arid scrub forests, the Wild Ass is specifically adapted to the harsh, saline depressions of the Kutch region CONTEMPORARY INDIA-I, Geography, Class IX, p. 43.

To survive in this extreme environment, the Indian Wild Ass has developed incredible physical stamina and speed, making it one of the fastest land mammals in India. The ecology of the Rann is defined by 'Bets'—elevated patches of land covered with grass and scrub that remain above water even when the surrounding salt flats are flooded during the monsoon. These 'Bets' are critical for the survival of the Khur, providing food and refuge when the rest of the Rann becomes an impassable marsh. This region also serves as a vital migration flyway for birds like cranes and flamingos, highlighting its importance as a biodiversity hotspot Environment, Shankar IAS Academy, Terrestrial Ecosystems, p. 29.

Despite being protected under the Wildlife Protection Act of 1972, the Indian Wild Ass faces significant challenges. Historically, its range extended across northwestern India and into Pakistan, but it is now restricted to the Indian Wild Ass Sanctuary in the Little Rann of Kutch Environment and Ecology, Majid Hussain, BIODIVERSITY, p. 41. The primary threats include habitat fragmentation due to salt mining activities and the spread of Prosopis juliflora, an invasive shrub that chokes the native grasses of the 'Bets'. Understanding the delicate balance between the saline flats and these grassy islands is key to the conservation of this unique equid.

Sources: CONTEMPORARY INDIA-I, Geography, Class IX, Chapter 5: Natural Vegetation and Wildlife, p.43; Environment, Shankar IAS Academy, Terrestrial Ecosystems, p.29; Environment and Ecology, Majid Hussain, BIODIVERSITY, p.41

8. Conservation Profile of Equus hemionus khur (exam-level)

The Indian Wild Ass (Equus hemionus khur), locally known as the Khur, is one of the most resilient and fastest land mammals in India. It is endemic to a very specific and harsh landscape: the saline deserts and arid grasslands of the Rann of Kachchh in Gujarat CONTEMPORARY INDIA-I, Geography, Class IX . NCERT, Chapter 5, p.43. Unlike many other large mammals that require lush vegetation, the Khur has evolved to thrive in an environment characterized by saline depressions (often called 'pats') and sandy plains where vegetation is sparse and water is brackish Environment, Shankar IAS Academy, Terrestrial Ecosystems, p.29.

While it shares the broader arid landscape of Western India with animals like the Chinkara (Indian Gazelle) and the desert fox, the Khur's range is far more restricted. For instance, while the Chinkara can be found across various scrub forests and sandy deserts, the Indian Wild Ass is now largely confined to the Wild Ass Sanctuary in the Little Rann of Kachchh Environment and Ecology, Majid Hussain, BIODIVERSITY, p.41. This specialization makes it highly vulnerable; any change to the delicate balance of the Rann—such as shifts in salinity or human encroachment—directly impacts its last remaining refuge.

From a conservation standpoint, the species is protected under the Wildlife Protection Act of 1972. Despite having no natural predators in its current restricted range, the Khur faces significant anthropogenic threats. The rapid growth of industrialization, salt mining activities, and the fragmentation of its habitat due to changing land-use patterns have put immense stress on its population Environment and Ecology, Majid Hussain, BIODIVERSITY, p.17. Effective conservation today focuses on maintaining the migratory corridors and ensuring that the unique saline depressions it depends on are not reclaimed for agriculture or large-scale infrastructure.

Sources: CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025), Chapter 5: Natural Vegetation and Wildlife, p.43; Environment and Ecology, Majid Hussain (Access publishing 3rd ed.), BIODIVERSITY, p.17, 18, 41; Environment, Shankar IAS Academy (ed 10th), Terrestrial Ecosystems, p.29

9. Solving the Original PYQ (exam-level)

This question perfectly synthesizes the concepts of Endemism and Ecological Adaptation that you have just mastered. In UPSC Geography and Environment modules, the examiners often describe a specific micro-ecosystem to see if you can identify the unique species that has evolved to survive there. The keywords "sandy and saline" are your primary diagnostic clues; they point specifically to the Rann of Kutch, a unique landscape where high salinity and arid conditions create a specialized niche. As highlighted in Contemporary India-I, Geography, Class IX (NCERT), understanding the distribution of wildlife requires linking an animal's physical requirements to the climatic zones of India.

To arrive at the correct answer, Indian wild ass, you must follow a path of environmental matching. The Indian wild ass (Khur) is the only species among the choices that is strictly endemic to the saline deserts of Gujarat. Reasoning through the clues: the absence of natural predators is a unique characteristic of its isolated desert stronghold, yet its specialized nature makes it hyper-vulnerable to habitat fragmentation and land-use changes. While it is one of the fastest mammals in India, it cannot outrun the destruction of the specific salt-crusted plains it calls home.

UPSC frequently uses "habitat traps" to test your precision. The Indian gazelle (Chinkara) is a common distractor because it inhabits arid regions; however, it is a generalist found in various scrub forests and is not restricted to saline areas. The Indian wild buffalo is a classic polar-opposite trap, as it requires wet floodplains and alluvial grasslands (like those in Assam), which directly contradicts the "sandy and saline" description. Finally, the Indian wild boar is far too ubiquitous across the subcontinent to be the specific subject of such a niche ecological description. Thus, by matching the habitat's chemical signature (saline) with the species' restricted range, we confirm the Indian wild ass as the only logical choice.