Question

Contraceptives

• A. prevent ovulation and fertilisation only.
• B. prevent ovulation only.
• C. prevent fertilisation only.
• D. prevent ovulation, fertilisation and implantation.

Answer 1

The correct option is D prevent ovulation, fertilisation and implantation.

Contraceptives are used to avoid pregnancy or to delay or space pregnancy. Contraceptives act by preventing ovulation, fertilisation or implantation.

Lactational amenorrhea is a natural birth control method in which ovulation does not occur during the period of intense lactation following parturition.

Hormonal contraceptives inhibit ovulation and also make the uterus unsuitable for implantation.

Barrier methods like condoms and diaphragms prevent the meeting of sperm and the ovum, hence prevent fertilisation.

Hence, contraceptives work by preventing ovulation, fertilisation or implantation and thus prevent pregnancy.