(2)A member of a Public Service Commission shall hold office for a term of six years from the date on which he enters upon his office or until he attains, in the case of the Union Commission, the age of sixty-five years, and in the case of a State Commission or a Joint Commission, the age of sixty-two years, whichever is earlier:Provided that--(a)a member of a Public Service Commission may, by writing under his hand addressed, in the case of the Union Commission or a Joint Commission, to the President, and in the case of a State Commission, to the Governor of the State, resign his office;(b)a member of a Public Service Commission may be removed from his office in the manner provided in clause (1) or clause (3) of article 317.