Chapter Overview & Weightage
Reproductive Health covers birth control methods, sexually transmitted diseases, infertility, and assisted reproductive technologies. Despite the low weightage, questions are straightforward and based on factual recall.
This chapter carries 2-3% weightage in NEET with 1-2 questions. Birth control methods and ART techniques are the most commonly tested areas.
Key Concepts You Must Know
Tier 1 (Core)
- Contraceptive methods: barrier (condoms, diaphragms), hormonal (pills, implants), IUDs (Cu-T, LNG-20), surgical (vasectomy, tubectomy)
- IUDs: Cu ions are spermicidal; hormone-releasing IUDs make uterus unsuitable for implantation
- Oral pills: contain synthetic estrogen + progesterone, prevent ovulation
- STDs: AIDS (HIV), gonorrhoea (Neisseria), syphilis (Treponema), genital herpes (HSV), chlamydia, HPV
Tier 2 (Frequently tested)
- ART techniques: IVF (in vitro fertilization), ZIFT (zygote transferred to fallopian tube), GIFT (gamete transfer), ICSI (intracytoplasmic sperm injection)
- MTP (Medical Termination of Pregnancy): legal in India up to 20 weeks (now 24 weeks in special cases)
- Amniocentesis: prenatal diagnostic technique, banned for sex determination in India
- Infertility causes and their ART solutions
Important Formulas
| Type | Method | Mechanism |
|---|---|---|
| Natural | Rhythm method, withdrawal | Avoid fertile period |
| Barrier | Condom, diaphragm, cervical cap | Physical barrier to sperm |
| Hormonal | Oral pills, implants, injections | Prevent ovulation/implantation |
| IUD | Cu-T, LNG-20 | Cu ions kill sperm / hormones prevent implantation |
| Surgical | Vasectomy (male), Tubectomy (female) | Permanent, blocks gamete transport |
| Chemical | Spermicides | Kill sperm in vaginal tract |
| Technique | Full Form | Procedure |
|---|---|---|
| IVF-ET | In Vitro Fertilization-Embryo Transfer | Fertilization outside body, embryo transferred to uterus |
| ZIFT | Zygote Intra Fallopian Transfer | Zygote (up to 8 cells) placed in fallopian tube |
| GIFT | Gamete Intra Fallopian Transfer | Ovum + sperm placed together in fallopian tube |
| ICSI | Intracytoplasmic Sperm Injection | Single sperm injected directly into ovum |
| IUI | Intrauterine Insemination | Semen placed directly in uterus |
For ART questions, remember where the transfer happens: GIFT and ZIFT = fallopian tube (the “F” in both stands for Fallopian). IVF-ET = uterus (ET = Embryo Transfer to uterus). NEET tests this transfer-site distinction.
Solved Previous Year Questions
PYQ 1 — NEET 2024
Problem: In GIFT, what is transferred to the fallopian tube?
(A) Zygote (B) Embryo (C) Ovum and sperm (D) Morula
Solution:
GIFT = Gamete Intra Fallopian Transfer. Gametes (ovum collected from donor/wife + sperm from husband/donor) are transferred together into the fallopian tube, where fertilization occurs naturally.
ZIFT transfers the zygote (fertilized egg). Don’t confuse GIFT (gametes) with ZIFT (zygote).
Answer: (C) Ovum and sperm
PYQ 2 — NEET 2023
Problem: Which of the following STDs is caused by a virus?
(A) Gonorrhoea (B) Syphilis (C) Genital herpes (D) Chlamydia
Solution:
- Gonorrhoea: bacteria (Neisseria gonorrhoeae)
- Syphilis: bacteria (Treponema pallidum)
- Genital herpes: virus (Herpes Simplex Virus, HSV)
- Chlamydia: bacteria (Chlamydia trachomatis)
Other viral STDs: AIDS (HIV), genital warts (HPV), Hepatitis B (HBV).
Answer: (C) Genital herpes
PYQ 3 — NEET 2022
Problem: Cu-T prevents pregnancy by:
(A) Preventing ovulation (B) Killing sperms with Cu ions (C) Blocking fallopian tubes (D) Preventing implantation only
Solution:
Copper-releasing IUDs like Cu-T release copper ions into the uterine cavity. These Cu ions are spermicidal — they kill or immobilize sperms, preventing fertilization. Additionally, they cause a mild inflammatory reaction in the uterus that is hostile to implantation.
The primary mechanism is the spermicidal action of Cu ions.
Answer: (B) Killing sperms with Cu ions
Difficulty Distribution
| Difficulty | % of Questions | What to Expect |
|---|---|---|
| Easy | 60% | Method classification, STD causative agent |
| Medium | 30% | ART technique comparison, IUD mechanism |
| Hard | 10% | Legal aspects, infertility cause-solution matching |
Expert Strategy
Single session (2-3 hours): This is a short chapter. Make two tables: (1) all contraceptive methods with mechanisms, and (2) all ART techniques with what gets transferred where. Add a third column for STDs: disease → causative organism → bacterial/viral. That’s essentially the entire chapter.
Classify STDs into bacterial (gonorrhoea, syphilis, chlamydia) and viral (AIDS, herpes, HPV, Hepatitis B). Bacterial STDs are curable with antibiotics; viral STDs are generally not curable (only manageable). NEET sometimes asks this curable/incurable distinction.
Common Traps
Trap 1 — GIFT transfers gametes, ZIFT transfers zygote. The names tell you everything: Gamete in GIFT, Zygote in ZIFT. The transfer site for both is the fallopian tube. IVF-ET transfers the embryo to the uterus.
Trap 2 — Vasectomy is for males, tubectomy is for females. Vasectomy = cutting vas deferens (male). Tubectomy = cutting fallopian tubes (female). Both are permanent sterilization methods. NEET has swapped these in options to trap inattentive readers.
Trap 3 — Amniocentesis is a diagnostic tool, not a contraceptive. It’s used to detect chromosomal abnormalities in the foetus. Its misuse for sex determination is banned under the PCPNDT Act. NEET asks about its purpose and legal status.