Question Discussion & Solution

The correct answer is Udaipur.

Key Points
Salar Forests:

• These are prevalent in the hills rising to more than 450 meters. 
• These are found in the Udaipur, Rajsamand, Chittorgarh, Sirohi, Pali, Ajmer, Jaipur, Alwar, and Sikar. 
• These are tropical dry deciduous forest.
• It is a good source of gum.
• Wood extract from this tree is used for packing.
• The other trees found in Salar forest are Dhok, Kathira and Dhavar.

The correct answer (A), (B), and (D)

Key Points

Western Sandy Plains of Rajasthan

• On the basis of the existing relief features, Rajasthan has been divided into
• The following physiographic divisions:
  • Western Sandy Plains: The Western Sandy Plains is subdivided into two units:
    • Sandy Arid Plains 
    • Marusthali
• Semi-Arid Transitional Plains (Rajasthan Bagar)
  • Luni Basin (Godwar Tract)
  • Plain of Interior Drainage (Shekhawati Tract)
  • Ghaggar Plain​

Important Points

• More than 60% of the Thar desert lies in the state of Rajasthan and extends into Gujarat, Punjab, and Haryana.
• The maximum area is covered in Rajasthan and the area of the total cover is 208,110 km.
  • covering the districts of Barmer, Jaisalmer, Jalor, Jodhpur, Bikaner, Ganganagar, Churu, Jhunjhunun, Sikar, Nagaur, and Pali.
• The Thar Desert, also known as the Great Indian Desert.
• It is the world's 20th-largest desert and the world's 9th-largest hot subtropical desert.
  • About 85% of the Thar Desert is in India, and about 15% is in Pakistan.
• The northeastern part of the Thar Desert lies between the Aravalli Hills.
  • The Western Sandy Plains is one of the most prominent physical divisions of Rajasthan. It covers a large part of the state in the west and the northwest of the Aravalli axis.​

The correct answer is Western part.

Key Points

• The western part of Rajasthan has antisol group of soils.

Additional Information 

• Antisol 
  • Antisols lack well-developed horizons and have minimum profile development.
  • Districts: Entisols are the dominant soil of the state.
  • All districts in the western half are covered in some or major part by these soils.
  • In Rajasthan, important suborders are Psamments, Orthents and Fluvent.

The correct answer is 1-C, 2-B, 3-D, 4-A.

Key Points

Important Points

• Aravali Mountain Region-
  • Its Geographical structure is firstly explained by A.M.Heran in 1923 AD.
  • It is compared with American Aplesian Mountain.
  • The Aravali Range is a northeast-southwest trending organic belt that is located in the northwestern part of the Indian Peninsula.
  • It extends in Rajasthan from 23° 20' north axis to 28° 20' north axis and 72° 10' eastern longitude to 77° eastern longitude.

The correct answer is Arid.

• Sewan and Lawan grasses grow in Arid climatic region of Rajasthan.

Additional Information 

• The dominant perennial grass is the indigenous sewan (Lasiurus sindicus), popularly known as the "king of desert grasses". 
• Sewan and Lawan are a remarkable natural resource for the people of the desert.
• High water-use efficiency enables this native grass cover to maximise its production even with little water available through scanty rainfall.
• It also has high energy-use efficiency, which permits it to produce more biomass.
• Sewan is the primary grass of extremely arid parts of Jaisalmer, Barmer and Bikaner districts of western Rajasthan in the Indian Thar desert.
• It thrives well under moisture stress on sandy plains, low dunes and hummocks of this region, receiving annual rainfall below 200 mm