Question

who is the head of Panchayat Samiti

Answer 1

Administrative chief....
government-appointed (BDO) block development officer

Answer 2

Head of Panchayat Samiti is the Sarpanch.  

Explanation:

Indian government has been divided into 2 categories central government and local government. Panchyat Samiti is the part of local government.  Head of Panchayat Samiti is Sarpanch.

He is the chairperson of Panchayat Samiti. It is elected by members of gram sabha and in some states chair person is directly elected.  Sarpanch has tenure of 5 years. Sarpanch is responsible to solve problems of people living in the village.