(a) The term of office of committee members and their respective alternates shall be for two years and shall begin as of August 1 and end as of July 31. The terms shall be so determined that about one-half of the total committee membership shall terminate each year.

(b) Committee members and alternates shall serve during the term of office for which they are selected and have qualified, or during that portion thereof beginning on the date on which they qualify during such term of office and continuing until the end thereof, and until their successors are selected and have qualified.