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NEET 2022, Biology Q83: Population Stabilisation and Birth Control

NEET2022Biology
Q.

Match List-I with List-II with respect to methods of Contraception and their respective actions.

List-IList-II
(a)Diaphragms(i)Inhibit ovulation and Implantation
(b)Contraceptive Pills(ii)Increase phagocytosis of sperm within Uterus
(c)Intra Uterine Devices(iii)Absence of Menstrual cycle and ovulation following parturition
(d)Lactational Amenorrhoea(iv)They cover the cervix blocking the entry of sperms

Choose the correct answer from the options given below :

  1. A

    (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)

  2. B

    (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

  3. C

    (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

  4. D

    (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

Solution

Match each contraceptive method to its mode of action.

Diaphragms are barrier devices placed over the cervix that block the entry of sperm into the uterus, so (a) maps to (iv).

Contraceptive (oral) pills contain progestogens that inhibit ovulation and implantation, so (b) maps to (i).

Intra Uterine Devices increase phagocytosis of sperm within the uterus (and some release copper to make the uterus hostile to sperm), so (c) maps to (ii).

Lactational amenorrhoea is the temporary absence of the menstrual cycle and ovulation while breastfeeding after parturition, so (d) maps to (iii).

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