Explanation: Chilika Lake is a significant geographical feature located in the state of Odisha, India. It is the largest coastal lagoon in India and is known for its unique characteristics and ecological importance. The lake is fed by 52 streams, which contribute to its brackish water composition and rich biodiversity. This makes Chilika Lake a unique and important water body in the region.
Chilika Lake is situated in the southern part of Odisha, near the Bay of Bengal. It covers an area of about 1,100 square kilometers and is a mix of freshwater and saltwater, making it a brackish water lagoon. The lake is fed by several rivers and streams, including the Daya River, which is the largest among them. The combination of freshwater from the rivers and the saltwater from the sea creates a unique ecosystem that supports a wide variety of flora and fauna.
The lake is an important habitat for migratory birds, with over 160 species of birds recorded in the area. It is also home to several species of fish, including the Irrawaddy dolphin, which is a rare and endangered species. The lake's ecosystem is crucial for the local economy, as it supports fishing and tourism activities.
The other options provided in the question are incorrect for the following reasons:
- Sardar Sarovar lake is a reservoir in Gujarat, not a natural lake, and is not located in Odisha.
- Vemband lake, or Vembanad Lake, is located in Kerala and is not known for being fed by 52 streams.
- Narjuna lake, or Narjuna Sagar Lake, is a reservoir in Telangana and is not located in Odisha.
Understanding the geographical features of Odisha, such as Chilika Lake, is important for students studying Odisha's geography and for those preparing for competitive examinations that include questions on the state's natural resources and biodiversity.