Explanation: Proto -Australoid group: Most of the Tribal population of India belong to this racial group.

• They are characterized by medium stature, dark brown skin colour, and curly hair, sink nose, low forehead and everted lips. Some scholars call them as Pre-Dravidian.
• These people exhibit strong muscular and well-built bodies. These types are represented by Gond of Bastar, Bhils of Rajasthan, Oraons, Mundas and Santhals of Chotanagapur, Chenchus of Andhra Pradesh, Kurumbas of Attapadi and Kol, Kharia, Ho tribes of Bihar.

Source: Kerala NCERT