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, including fish, birds, and insects. They also play an important role in the lake’s ecosystem, as they help to filter the water and provide habitat for fish.

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.