(a) Describe the surgical methods of birth control (i) for men, and (ii) for women.
(b) Name two devices used in the barrier method of birth control.

(a) (i) The surgical method of birth control for men is called vasectomy in which a small portion of the vas deferens is cut and their ends are sealed to prevent sperms from coming out.
(ii) The surgical method of birth control for women is called tubectomy in which a portion of oviducts are cut and their ends are ligated to prevent the release of eggs.
(b) The two devices used in the barrier method of birth control are condoms and diaphragms.