(1) A person who is a member of any of the bodies established as aforesaid shall, subject to the provisions of this Part, remain a member thereof -
(a) in the case of an ex officio member, whilst he holds the office by virtue of which he is a member of the body;
(b) in the case of a person who is a member by virtue of his having previously held an office, for the duration of his life; and
(c) in the case of a person who is a member otherwise than as ex officio member or otherwise than by virtue of his having previously held an office, for a period of five years from the date of his appointment.
(2) A member of any of the bodies shall cease to be member if any circumstances arise that, if he were not a member of the body, would cause him to be disqualified for appointment as such a member.
Section 155 of the Constitution of the Federal Republic of Nigeria