Infertility and Assisted Reproductive Technologies

Correct answer: A. Failure to achieve pregnancy after 12 months of regular, unprotected intercourse

Explanation: Infertility generally refers to failure to achieve pregnancy after 12 months of regular, unprotected intercourse, so option A is correct. The definition concerns the inability to conceive and may involve factors affecting the male partner, the female partner, or both. Pregnancy is the outcome being sought, childbirth occurs after pregnancy, and menstruation is a separate reproductive event; none of these defines infertility.

Correct answer: A. Assisted Reproductive Technologies

Explanation: In reproductive health, ART stands for Assisted Reproductive Technologies. These medical techniques help individuals or couples achieve pregnancy when conception is difficult; in vitro fertilisation (IVF) is a well-known example. The other expansions are not the accepted meaning in this context.

Correct answer: A. In Vitro Fertilisation

Explanation: IVF stands for In Vitro Fertilisation, making option A correct. In this assisted reproductive technology, an ovum and sperm are brought together outside the body in controlled laboratory conditions. After fertilisation and early development, a suitable embryo may be transferred to the uterus. In vivo means inside the body, while fusion and internal vaginal fertilisation are not the accepted expansion of IVF.

Correct answer: A. In vitro fertilisation and embryo transfer (IVF-ET)

Explanation: The ‘test-tube baby’ programme is conventionally associated with IVF followed by embryo transfer, abbreviated as IVF-ET. Fertilisation occurs outside the body in a laboratory, after which the developing embryo is transferred, usually into the uterus. IUI and AI do not involve laboratory fertilisation, while ICSI is a specialised fertilisation procedure used as part of IVF.

Correct answer: A. Fallopian tube

Explanation: ZIFT stands for Zygote Intrafallopian Transfer. In this assisted reproductive technique, a zygote or very early embryo is transferred into a fallopian tube, where it may continue its early development before reaching the uterus. Transfer directly into the uterus is associated with procedures such as IVF-ET.

Correct answer: A. Uterus

Explanation: In IUT, or intrauterine transfer, the embryo is transferred into the uterus, where implantation may occur and development may continue. The ovary produces ova, the fallopian tube is the site used in procedures such as ZIFT, and the cervix is the lower passage of the uterus rather than the intended transfer site in IUT.

Correct answer: A. Gametes—sperm and ovum

Explanation: GIFT stands for Gamete Intrafallopian Transfer. In this technique, sperm and an ovum—the two gametes—are placed into a fallopian tube before fertilisation. Fertilisation may then occur inside the tube. A zygote, early embryo, and blastocyst are stages that develop after fertilisation and therefore are not transferred before it in GIFT.

Correct answer: A. A selected sperm is directly injected into the cytoplasm of an ovum.

Explanation: ICSI stands for intracytoplasmic sperm injection. In this assisted reproductive technique, one selected sperm is injected directly into the cytoplasm of an ovum to assist fertilization. Option B describes conventional IVF, in which sperm and the ovum are placed together so that fertilization can occur without direct injection.

Correct answer: A. Into the uterus

Explanation: IUI means intrauterine insemination, so the processed sperm are introduced directly into the uterus through a thin catheter; option A is correct. Preparing the semen sample concentrates suitable, motile sperm and places them closer to the usual site where fertilisation may occur. Introducing sperm into the vagina is not the defining feature of IUI, while direct placement into an ovary or fallopian tube describes different procedures.

Correct answer: A. When one or both partners cannot provide viable sperm or ova

Explanation: Donor sperm or donor ova may be considered when one or both partners cannot provide suitable viable gametes for conception. Donor gametes do not directly remove a blocked fallopian tube, treat sexually transmitted infections or function as contraception; those problems require different approaches.

Correct answer: A. Infertility

Explanation: Assisted Reproductive Technologies include procedures such as in vitro fertilisation (IVF), which can help individuals or couples facing infertility achieve pregnancy. ART is intended to address reproductive difficulties, not to treat the common cold, diabetes, or malaria.

Correct answer: A. Outside the body under controlled laboratory conditions

Explanation: The governing concept is assisted reproductive technology. In IVF, mature oocytes and sperm are collected and brought together outside the woman’s body in a controlled laboratory environment. After fertilisation and early embryo development, a selected embryo may be transferred into the uterus. The fallopian tube is the usual site of natural fertilisation, whereas the uterus receives the embryo later. Thus option A is correct.