Pursuant to the provisions of Tennessee Code Annotated there is hereby created a Parks and Recreation Board which shall consist of seven (7) persons, to be appointed by the Mayor to serve for terms of five (5) years or until their successors are appointed, except that three (3) members shall be appointed to a term which shall expire in each of the first three (3) years next succeeding the passage of this ordinance and four (4) members shall be appointed two (2) of whose terms shall expire in the fourth (4th) and fifth (5th) year next succeeding the initial passage of this ordinance so that one (1) or two (2) members terms expire annually thereafter. The members of such board shall serve without pay. Vacancies on such board occurring otherwise than by expiration of the stated term shall be filled only for the unexpired term, in the same manner in which other appointments are made.