Explanation
The Planning Commission of India was a non-statutory body.
The Planning Commission was an executive body that was set up by a Government of India resolution in 1950, and it functioned as the country's central planning authority until it was replaced by the NITI Aayog in 2015. As a non-statutory body, the Planning Commission did not have any legal basis in the Constitution or in any statute. Instead, it was created by a government resolution, and its functions and powers were determined by the executive branch of the government.