Correct Option
The correct option is Silver Fir.
Explanation
Tropical Thorn Forests and Scrubs occur in regions receiving less than 50 cm of annual rainfall. These forests are characteristic of semi-arid areas in northwest India, including parts of Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh, and Haryana. The vegetation consists of stunted trees and bushes adapted to survive in dry, hot environments.
Option Analysis
- Babool, Ber, and Khejri: These are typical species of Tropical Thorn Forests. They exhibit xerophytic adaptations, such as long roots to penetrate deep into the soil for moisture and small leaves or thorns to minimize water loss through transpiration.
- Silver Fir: This is a coniferous tree found in Montane Forests (specifically in the Himalayan region) at high altitudes, typically between 1,500 and 3,000 meters. It requires a cool, temperate climate and is not found in arid, low-altitude thorn forests.
Key Takeaway: Silver Fir is a characteristic species of high-altitude Montane Forests, whereas Babool, Ber, and Khejri are xerophytic species native to arid Tropical Thorn Forests.