Explanation:

 The Municipal Corporations, Municipalities, Notified Area Committees, Town Area Committees, Cantonment Boards, Townships and Port Trusts are called Area Based Urban bodies. Apart from that there are some functional local bodies which are established as autonomous bodies via legislations by the state legislatures. These include the Town Improvement Trusts, Urban Development Authorities, Water Supply and Sewerage Boards, City Transport Boards, Housing Boards, pollution Control Boards, Electricity supply Boards etc. They work autonomously and are not subordinate to the area based bodies.