When appointed, special officers shall qualify in the same manner as provided by law for regularly elected officers, shall have all the power and authority of the regularly elected officers necessary to effectuate the purposes of the appointment and shall carry out the directions of the Governor, pursuant to the appointment, in the same manner and to the same extent as the duly elected officers could do or perform; and no greater power shall be conferred upon any special officer than is by law lodged with the regularly elected officers. [Formerly 148.160]