UPSC Prelims 2015 Question:

In a particular region in India, the local people train the roots of living trees into robust bridges across the streams. As the time passes, these bridges become stronger. These unique ‘living root bridges’ are found in

Explanation:

• A living root bridge is like a suspension bridge formed by guiding the pliable roots of the rubber fig tree (Ficus elastica) across a stream or river and allowing the roots to grow and strengthen over time. There are no records to suggest when the Khasi community started the living root bridge tradition, but ecologists say it highlights the symbiotic relationship between people and nature. Such a bridge is locally called jingkieng jri. They are common in the southern part of the Indian state of Meghalaya.
   

• They are handmade from the aerial roots of rubber fig trees by the Khasi and Jaiñtia tribes. As long as the tree from which it is formed remains healthy, the roots in the bridge can naturally grow thick and strengthen.
  
  

Therefore, option (1) is the correct answer.

Subject: Geography | Natural Vegetation and Wildlife