The duration of office of a member is three years from the date of notification provided that the term of office of an ex officio member shall continue so long as he holds office by virtue of which he is such a member and shall expire as soon as he ceases to be Member of the House, which elected him. The term of a member nominated or elected to fill a causal vacancy shall continue for the remainder of the term of the member in whose place he has been appointed and an outgoing member shall, unless the Central Government otherwise directs, continue in office until another person is appointed as a member in his place.