There is hereby created a Board of Regents for the Oklahoma Agricultural and Mechanical College and all Agricultural and Mechanical Schools and Colleges maintained in whole or in part by the State. The Board shall consist of nine (9) members, eight (8) members to be appointed by the Governor by and with the advice and consent of the Senate, a majority of whom shall be farmers, and the ninth member shall be the President of the State Board of Agriculture. Any vacancy occurring among the appointed members shall be filled by appointment of the Governor by and with the advice and consent of the Senate. The members of the Board shall be removable only for cause as provided by law for the removal of officers not subject to impeachment. The members shall be appointed for terms of eight (8) years each, with one term expiring each year, provided that the members of the first Board shall be appointed for terms of from one (1) to eight (8) years respectively. Provided that no State, National or County officer shall ever be appointed as a member of said Board of Regents until two years after his tenure as such officer has ceased.