Match List-I with List-II:
| List-I | List-II |
|---|---|
| A. Oral pills | I. Prevent the ejaculated semen from entering the female reproductive tract |
| B. Condoms | II. Released Cu ions suppress sperm motility |
| C. Vasectomy | III. Inhibit ovulation and implantation |
| D. Copper T | IV. A small part of the vas deferens is removed or tied up |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A-III, B-I, C-IV, D-II
Each method in List-I prevents conception at a different step: stopping ovulation, keeping semen out, blocking the sperm duct or weakening the sperms.
(A) Oral pills — this matches (III) Inhibit ovulation and implantation. Pills also alter the cervical mucus to retard the entry of sperms.
(B) Condoms — this matches (I) Prevent the ejaculated semen from entering the female reproductive tract. They are thin rubber or latex sheaths used just before coitus.
(C) Vasectomy — this matches (IV) A small part of the vas deferens is removed or tied up. It is done through a small incision on the scrotum.
(D) Copper T — this matches (II) Released Cu ions suppress sperm motility. They also lower the fertilising capacity of sperms.
So the correct matching is A-III, B-I, C-IV, D-II.
NCERT Extract:
Population Stabilisation and Birth Control – “… Condoms … are barriers made of thin rubber/ latex sheath that are used to cover the penis in the male or vagina and cervix in the female, just before coitus so that the ejaculated semen would not enter into the female reproductive tract.”
Population Stabilisation and Birth Control – “… IUDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms.”
Population Stabilisation and Birth Control – “… They inhibit ovulation and implantation as well as alter the quality of cervical mucus to prevent/retard entry of sperms.”
Population Stabilisation and Birth Control – “… In vasectomy, a small part of the vas deferens is removed or tied up through a small incision on the scrotum … whereas in tubectomy, a small part of the fallopian tube is removed … or tied up through a small incision in the abdomen or through vagina.”