Pick the ART technique by asking WHAT the problem is: very low sperm count that still works uses Artificial Insemination (AI/IUI); sperm that cannot fertilise on its own uses ICSI (sperm injected into ovum); a female who cannot produce her own ovum but has a healthy tube/uterus uses GIFT (donor ovum into the fallopian tube). If fertilisation is done outside the body (IVF), the zygote/early embryo (up to 8 blastomeres) goes back by ZIFT into the tube, and a bigger embryo (more than 8 blastomeres) goes by IUT into the uterus. Memory hook: "AI = help the sperm reach, ICSI = force one sperm in, GIFT = give an ovum, ZIFT = zygote to tube, IUT = infant-stage embryo to uterus."
Decision map for NEET: each infertility problem on the left leads to the correct ART technique. IVF (fertilisation outside the body) is followed by ZIFT for embryos up to 8 blastomeres (to the fallopian tube) or IUT for embryos over 8 blastomeres (to the uterus).
Your doubts, answered
Which technique is used when the male has a very low sperm count?
Artificial Insemination (AI), also called IUI when semen is put into the uterus. NCERT says infertility due to the male's inability to inseminate the female or due to very low sperm count is corrected by AI, where semen from the husband or a healthy donor is introduced into the vagina or uterus. So the trigger words "low sperm count" point to AI/IUI, NOT to IVF or ICSI.
Then when do we use ICSI instead of AI?
Use ICSI when the sperm cannot fertilise the ovum on its own, even if some sperm exist. In ICSI a single sperm is directly injected into the ovum in the laboratory to form the embryo. It is an in-vitro (outside the body) method. AI just delivers semen to the right place and lets fertilisation happen naturally inside; ICSI does the fertilisation for the sperm.
Which technique is chosen when the female cannot produce her own ovum?
GIFT (Gamete Intra Fallopian Transfer). An ovum collected from a donor is transferred into the fallopian tube of a female who cannot produce her own ovum but can provide a suitable environment for fertilisation and further development. The key phrase in NCERT is "cannot produce an ovum but can provide suitable environment."
After IVF, how do I decide between ZIFT and IUT?
Count the blastomeres. The zygote or early embryo with up to 8 blastomeres is transferred into the fallopian tube = ZIFT. An embryo with more than 8 blastomeres is transferred into the uterus = IUT. Same idea (put back what was made outside), but ZIFT goes to the tube early, IUT goes to the uterus later.
What exactly is IVF, and where do ZIFT and IUT fit?
IVF (In Vitro Fertilisation) means fertilisation happens in the lab dish, outside the body (the "test tube baby" method). IVF is the fertilisation step; ZIFT and IUT are the transfer steps that put the resulting zygote/embryo back into the woman. So IVF is followed by either ZIFT or IUT depending on embryo stage.
Is GIFT the same as IUT because both put something in the fallopian tube?
No. GIFT transfers a gamete (a donor ovum) into the fallopian tube, and fertilisation still has to happen inside the body. IUT transfers an already-formed embryo (more than 8 blastomeres) into the uterus, not the tube. Different material (gamete vs embryo) and different destination (tube vs uterus).
⚠️ The NEET trap ✗ For a male with very low sperm count, choose ICSI because sperm is weak. ✓ NCERT prescribes Artificial Insemination (AI/IUI) for very low sperm count or inability to inseminate. ICSI is for when a sperm must be injected directly into the ovum to achieve fertilisation. NEET 2017 keyed this to AI, so match the exact NCERT wording, not general logic. 🧠 Low sperm count does NOT mean ICSI by default.
Real NEET questions
NEET 2017
In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?
A · Intrauterine transfer
B · Gamete intracytoplasmic fallopian transfer
C · Artificial Insemination ✓
D · Intracytoplasmic sperm injection
Solution: When the male has very low sperm count or cannot inseminate the female, NCERT prescribes Artificial Insemination (AI): semen from the husband or a healthy donor is introduced into the vagina or uterus. IUT transfers embryos (not for low sperm count), so it is wrong. Match the NCERT wording exactly.
NEET 2026 (1)
Choose the correct statement regarding GIFT to overcome infertility.
A · Ova collected from a female donor are transferred to the uterus of an infertile female.
B · Early embryos with up to 8 blastomeres are transferred to the uterus of an infertile female.
C · Early embryos with up to 8 blastomeres are transferred into the fallopian tube of an infertile female.
D · It is the transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce ovum but can provide suitable environment for fertilization and development. ✓
Solution: GIFT transfers a donor ovum (a gamete) into the fallopian tube of a female who cannot produce her own ovum but can provide a suitable environment. The other options describe ZIFT (embryo up to 8 blastomeres into the tube) and IUT (into the uterus), not GIFT.
ReNEET 2026
The method of directly injecting a sperm into the ovum in assisted reproductive technology is called:
A · Gamete intra fallopian transfer (GIFT)
B · Zygote intra fallopian transfer (ZIFT)
C · Intra cytoplasmic sperm injection (ICSI) ✓
D · Embryo transfer (ET)
Solution: ICSI is a specialised in-vitro procedure in which a single sperm is injected directly into the ovum to form an embryo in the laboratory. GIFT transfers an ovum into the fallopian tube and ZIFT transfers the early zygote/embryo into the tube, so they do not fit "directly injecting a sperm into the ovum."
Solved Reproductive Health NEET PYQs
Try the real previous-year questions from this chapter — each with the answer and a full solution.
IVF places many sperm near the ovum in a lab dish and lets one fertilise it naturally. ICSI directly injects a single sperm into the ovum. ICSI is used when the sperm cannot fertilise on its own, even in a dish.
Is AI the same as IUI?
They are closely linked. Artificial Insemination (AI) introduces semen into the vagina or uterus. When semen is placed specifically into the uterus it is called Intra-Uterine Insemination (IUI). Both are for low sperm count or inability to inseminate.
Which ART technique uses a donor ovum?
GIFT uses a donor ovum, transferred into the fallopian tube of a woman who cannot produce her own ovum but has a healthy tube and uterus for fertilisation and development.
Why does NEET keep testing ZIFT vs IUT?
Because the only difference is embryo stage and destination: up to 8 blastomeres to the fallopian tube (ZIFT) versus more than 8 blastomeres to the uterus (IUT). Remembering the number 8 and the destination scores easy marks.
Are these ART techniques widely used in India?
No. NCERT notes they need very high precision, specialised professionals and expensive instrumentation, so only a few centres offer them and benefits reach limited people. This point itself is asked in PYQs.
