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 the 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 birth control (or preventing pregnancy)?
(e) The use of which contraceptive device, X or Z, can protect the persons from sexually transmitted diseases?

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Solution

(a) The device X is condom.

(b) Y represents sperms.

(c) The device Z is copper-T.

(d) The general name of these methods of birth control is called barrier method or IUCD (Intrauterine Contraceptive Device).

(e) Using condoms (X) during sexual intercourse can protect a person from sexually transmitted disease.

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