The human males use a device X made of a very thin rubber sheet as a covering on the male organ to prevent pregnancy. This device traps the gametes Y in it. In order to prevent pregnancy, the human females use a device Z which is a circle of rubber with a metal spring around it. The device Z is put inside the vagina to cover cervix. It stops Y from going into the uterus.
(a) What is device X ?
(b) What are Y ?
(c ) name the device Z.
(d) What is the general name of these methods of these methods of birth control (or preventing pregnancy)?
(e) The use of which contraceptive device, X or Z can protect the persons from sexually transmitted diseases?

Answer

(a) Condom (b) Sperms (c) Diaphragm (or Cap) (d) Barrier methods (e) X