There shall be a Planning Commission for the City consisting of nine members all of whom shall be residents of the City, and all of whom shall be qualified by knowledge and experience in matters pertaining to the development of the City. Such members shall include representatives of business, industry and labor; provided, that each ward of the City shall be represented by at least two members. Three-fifths of all of such members shall have been residents of the City for at least ten years prior to their nomination. All of such members shall be nominated by the Mayor but subject to confirmation by Council. One member of the Commission shall be a member of Council and one member of the Commission shall be from some administrative department of the City.