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REET L1 · Environmental Studies (EVS)

The Thar Desert

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The Thar Desert is Rajasthan's most distinctive geographical identity, and the EVS syllabus places special emphasis on its climate, flora, fauna and water management. This page covers everything exam-useful, from the desert's geography to state symbols (state animal, bird, tree).

  • No question came from this topic in REET 2024
  • Class 1–5 level
  • 9 min read
Verified 17 September 2026 · Source: Forest Department, Government of Rajasthan

How this topic is asked in REET

REET 2024's answer key has no direct question recorded from 'The Thar Desert'. The topic is clearly included in the BSER EVS syllabus, and questions such as 'what percentage of Rajasthan does the Thar Desert cover', 'which is the state animal/bird/tree', or 'which crops/plants are found in the desert' are commonly asked.

A general introduction to the Thar Desert

Other name
The 'Great Indian Desert'
Extent
Spread over roughly 60% of Rajasthan's geographical area — mainly in Jaisalmer, Barmer, Bikaner, Jodhpur, Churu, Nagaur, Sri Ganganagar, Hanumangarh, Jalore and Pali districts
Distinction
Considered the world's most densely populated desert
Sand dunes
Landforms made of sand dunes (locally 'dhora'/'tibba'); crescent-shaped (barchan) dunes are also found in some places

Desert flora, fauna and state symbols

CategoryName/example
State treeKhejri (kalpavriksha) — the most useful and most widely found tree in the desert
State animalCamel (the backbone of desert transport and livelihood)
State birdGodawan (Great Indian Bustard) — a critically endangered species, protected at the Desert National Park (Jaisalmer)
Other floraKer, sangri (khejri pods, used in the dish 'ker-sangri'), rohida, babul, phog
Other faunaChinkara (a gazelle species), desert fox, desert cat

Indira Gandhi Canal — greenery in the desert

To address the water shortage in the Thar Desert, the Indira Gandhi Canal project was built, carrying water from Punjab's Sutlej-Beas-Ravi rivers via the Harike Barrage to Sri Ganganagar, Hanumangarh, Bikaner and Jaisalmer. It is counted among the world's largest canal projects, and has made a large part of the desert cultivable.

Before the canal, people in these regions depended on traditional rainwater-harvesting methods — such as the tanka (an underground reservoir), nadi and khadin — which remain an important part of desert life even today.

Desert lifestyle and adaptation

Desert flora and fauna have evolved to cope with extreme heat and low rainfall — for example, the khejri's deep roots reach groundwater, and camels can go without water for long periods. In EVS, this topic is ideal for connecting children to the core idea of 'how living things adapt to their surroundings'.

Traditional houses in the Thar region have thick mud walls and small windows, which help control the indoor temperature — this is covered in more detail in EVS's 'Shelter' topic.

Locust swarms — a desert challenge

Farming in the Thar region has historically faced a major challenge — attacks by desert locust swarms. Under favourable weather conditions, locusts enter in large swarms from neighbouring countries through western Rajasthan and can cause heavy damage to standing crops in a short time. Large locust attacks were also seen in western Rajasthan in recent years (2019-20), after which special monitoring and control measures were adopted.

This example shows children that desert life requires people to deal with more than just water and heat — natural events like this too, which are not as big a problem in typical agricultural areas.

Desert agriculture

Because of low and uncertain rainfall, farming in the Thar region has mainly depended on unirrigated (barani) and drought-tolerant crops. Bajra (pearl millet) is the region's main food crop, giving a good yield even with little water. Guar (cluster bean) is another important cash crop — Rajasthan leads India in guar production, and 'guar gum' obtained from it is used from the food industry to oil drilling, making it an important export product too.

After the arrival of the Indira Gandhi Canal, irrigated crops such as wheat and cotton have also become possible in districts like Sri Ganganagar and Hanumangarh, changing the agricultural picture of a large part of the desert. This change is a useful example to show children that with proper water management, even a challenging terrain can be made productive.

Desert livelihoods, livestock and solar energy

Livelihoods for Thar Desert residents have traditionally been based on animal husbandry — rearing sheep, goats and camels is an integral part of rural life here. Weaving with wool obtained from sheep (such as the traditional woollen textiles of Jaisalmer and Bikaner) has been an important cottage industry, providing an alternative source of income in an area with low rainfall and limited farming.

In recent decades, the Thar Desert's abundant sunshine and open plains have also made it suitable for renewable energy — large solar and wind power plants have been set up in the Jaisalmer and Barmer regions, making Rajasthan one of India's leading solar-power-producing states. This example shows children that land once considered too challenging for agriculture has today become a major power in energy production.

How to teach this to children

Classroom activity

Show a khejri leaf/pod (sangri) and a sand sample in class for touch- and observation-based learning.

Teaching material

Show pictures/videos of the godawan (Great Indian Bustard) and camel and discuss their desert adaptations.

Common misconception

Children often think there's no flora or fauna in the desert — clear this misconception with examples like khejri, chinkara and godawan.

Assessment idea

Judge understanding through oral discussion and picture-based questions on 'how does this creature/tree survive in the desert'.

Cross-subject link

Add a simple maths activity by discussing data such as 'how many days can a camel go without water', creating a natural integration of EVS and maths.

Memory trick

Remember Rajasthan's four 'state symbols' together — Animal: camel, Bird: godawan, Tree: khejri. All three are directly tied to the desert, so remembering them as the 'Thar triangle' makes it easy.

Practice Questions

Question 1

The Thar Desert spans approximately what percentage of Rajasthan's geographical area?

  1. Aलगभग 30%
  2. Bलगभग 60%
  3. Cलगभग 90%
  4. Dलगभग 15%

Explanation

The Thar Desert covers roughly 60% of Rajasthan's geographical area, mainly spread across the state's western districts.

Question 2

What is the state animal of Rajasthan?

  1. Aचिंकारा
  2. Bऊँट
  3. Cनीलगाय
  4. Dमरु बिलाव

Explanation

The camel has been declared Rajasthan's state animal because it is the main basis of desert transport and livelihood.

Question 3

Rajasthan's state bird, the 'Godawan', is mainly conserved in which park?

  1. Aरणथंभौर राष्ट्रीय उद्यान
  2. Bकेवलादेव राष्ट्रीय उद्यान
  3. Cमरु राष्ट्रीय उद्यान, जैसलमेर
  4. Dसरिस्का बाघ रिज़र्व

Explanation

The critically endangered godawan (Great Indian Bustard) is mainly protected at the Desert National Park in Jaisalmer.

Question 4

Which is the state tree of Rajasthan, also called the 'Kalpavriksha' (wish-fulfilling tree)?

  1. Aरोहिड़ा
  2. Bखेजड़ी
  3. Cबबूल
  4. Dकैर

Explanation

The khejri tree is called the 'kalpavriksha' because of its wide usefulness in desert life, and it is Rajasthan's state tree.

Question 5

The water of the Indira Gandhi Canal is mainly drawn from which rivers?

  1. Aगंगा व यमुना
  2. Bसतलुज, ब्यास व रावी
  3. Cचंबल व बनास
  4. Dनर्मदा व ताप्ती

Explanation

The Indira Gandhi Canal carries water from Punjab's Sutlej, Beas and Ravi rivers via the Harike Barrage to Rajasthan's desert areas.

Question 6

What is the pod of the Khejri tree called, used in a famous Rajasthani dish?

  1. Aसांगरी
  2. Bबाजरी
  3. Cकैर
  4. Dफोग

Explanation

The khejri's pod is called 'sangri', which combines with ker to make the famous Rajasthani dish 'ker-sangri'.

Question 7

In desert regions, which underground reservoir is traditionally used for rainwater harvesting?

  1. Aबावड़ी
  2. Bटांका
  3. Cजोहड़
  4. Dबांध

Explanation

A tanka is an underground reservoir traditionally used by desert families for harvesting rainwater.

Question 8

What is the most suitable way to teach the concept of 'adaptation' in desert animals in Class 4?

  1. Aकेवल परिभाषा लिखवाना
  2. Bऊँट व खेजड़ी के उदाहरण से चर्चा व चित्र-अवलोकन कराना
  3. Cकोई गतिविधि न कराना
  4. Dजटिल वैज्ञानिक शब्दावली रटवाना

Explanation

At the primary level, abstract concepts (adaptation) are better understood through concrete examples (camel, khejri) and discussion.

Question 9

What are the sand dunes of the Thar Desert locally called?

  1. Aधोरा/टिब्बा
  2. Bखड़ीन
  3. Cनाड़ी
  4. Dबेरी

Explanation

In the Thar Desert, sand dunes are locally called 'dhora' or 'tibba'.

Question 10

The Thar Desert is globally known for which characteristic?

  1. Aसबसे ठंडा मरुस्थल
  2. Bसबसे अधिक जनसंख्या-घनत्व वाला मरुस्थल
  3. Cसबसे छोटा मरुस्थल
  4. Dसमुद्र-तटीय मरुस्थल

Explanation

The Thar Desert is considered the world's most densely populated desert, since canal irrigation and traditional water management support a large population there.

Frequently Asked Questions

What percentage of Rajasthan's area does the Thar Desert cover?+

The Thar Desert covers roughly 60% of Rajasthan's geographical area, mainly in the western districts.

What is Rajasthan's state bird?+

The godawan (Great Indian Bustard) is Rajasthan's state bird, a critically endangered species.

Where does the Indira Gandhi Canal's water come from?+

Water from Punjab's Sutlej, Beas and Ravi rivers reaches Rajasthan's desert areas via the Harike Barrage through the Indira Gandhi Canal.

Why is khejri called the 'kalpavriksha'?+

The khejri is called the 'kalpavriksha' (wish-fulfilling tree) because it is useful for desert life in every way — food, fodder, fuel and shade.

What new energy potential is the Thar Desert known for today?+

Because of abundant sunshine and open plains, the Jaisalmer-Barmer region has become a major centre for solar and wind power production.

What kind of problem are locust swarms, and where do they mainly affect?+

Locust swarms are large groups of insects that attack in swarms, capable of causing heavy damage to standing crops in western Rajasthan (Jaisalmer, Barmer, Jodhpur area) in a short time.

Read next

Official Sources

  1. Forest Department, Government of Rajasthan
  2. Indira Gandhi Canal Project, Water Resources Department, Rajasthan

Change Log

  • 17 September 2026 — English page published — mirrors the fact-checked Hindi page, independently bilingual-accuracy checked