The western part of Teesta River in West Bengal is called

Correct answer: Terai

Explanation: The western part of the Teesta River basin in West Bengal is known as the Terai region, characterised by marshy and forested lowlands. 📚 Other Information: ▪️ The Terai lies south of the Himalayan foothills and north of the Duars. ▪️ It is formed by alluvial deposits from Himalayan rivers. ▪️ The area is rich in biodiversity and has dense forests and grasslands. ▪️ It is prone to flooding and waterlogging due to poor drainage. ▪️ Important wildlife areas include the Jaldapara and Gorumara National Parks. ▪️ The Terai zone extends across Uttarakhand, Bihar, and West Bengal. ▪️ The term 'Terai' means ‘moist land’ in local dialects. ▪️ It acts as a transition zone between the plains and the mountains.