The Loktak Lake is a unique feature of Manipur’s landscape and is known for its:

Floating islands (phumdis)
Volcanic origin
Saltwater ecosystem
Waterfalls

The correct answer is: Floating islands (phumdis).

Phumdis are unique to Loktak Lake and are a type of floating peat bog. They are formed by the accumulation of organic matter, mainly plant material, over time. The phumdis are home to a variety of plant and animal life, and they play an important role in the lake’s ecosystem.

The other options are incorrect.

  • Volcanic origin: Loktak Lake is not of volcanic origin. It is a freshwater lake that was formed by the damming of the Manipur River.
  • Saltwater ecosystem: Loktak Lake is a freshwater lake. It does not have a saltwater ecosystem.
  • Waterfalls: Loktak Lake does not have any waterfalls.