Reproductive Health: NEET PYQ, 2018–2026

Q1 · Zoology · Reproductive Health

Chlamydiasis, a common sexually transmitted infection that is often asymptomatic in its early stage, is caused by which organism?

• AChlamydia trachomatis, a bacterium
• BTreponema pallidum, a spirochaete
• CTrichomonas vaginalis, a protozoan
• DNeisseria gonorrhoeae, a bacterium

Q2 · Zoology · Reproductive Health

Which of the following is the correct sequence of steps in the IVF procedure, from hormonal treatment of the female to placing the embryo in the uterus?

• ASuperovulation, ovum retrieval, fertilisation in vitro, embryo culture, embryo transfer into the uterus
• BFertilisation in vitro, superovulation, embryo transfer into the uterus, ovum retrieval
• COvum retrieval, embryo transfer into the uterus, fertilisation in vitro, embryo culture
• DSuperovulation, sperm injection into the ovum inside the uterus, embryo culture, embryo transfer into the uterus

Q3 · Zoology · Reproductive Health

A woman has non-functional ovaries and receives donor ova from an egg bank. Her husband's sperm fertilises these donor ova in vitro, and the resulting embryo is transferred into the wife's uterus, where the pregnancy develops. Which statement correctly describes the child's parentage?

• AThe child is genetically related to the husband and the ovum donor, and the wife provides the uterine environment for development.
• BThe child is genetically related to the husband and the wife, since the wife's uterus is the site of development and the child is therefore hers.
• CThe child is genetically related to the husband and the ovum donor, and the wife's contribution is limited to the sperm donation.
• DThe child is genetically related only to the husband, because the donor ovum is only a source of cytoplasm and carries no nuclear genetic material.

Q4 · Zoology · Reproductive Health

The Pre-Natal Diagnostic Techniques (PNDT) Act of 1994 in India was enacted mainly to prevent which practice?

• ASex-selective termination of female foetuses, which leads to a skewed sex ratio
• BUse of oral contraceptive pills by adolescent girls
• CSurgical sterilisation of men in government camps
• DTransmission of sexually transmitted infections through blood transfusion

Q5 · Zoology · Reproductive Health

An emergency contraceptive pill is taken within 72 hours after unprotected coitus. Which mechanism best describes its action?

• AIt prevents or delays ovulation and inhibits fertilisation or implantation
• BIt kills sperm already present in the vagina and cervix
• CIt causes abortion of an already implanted embryo
• DIt permanently blocks both fallopian tubes

Q6 · Zoology · Reproductive Health

A man undergoes vasectomy. Several months later, which of the following is the most accurate description of his condition relative to before the procedure?

• ASperm are absent from his ejaculate, his testes stop producing sperm, and his serum testosterone falls markedly.
• BSperm are absent from his ejaculate, sperm production in the testes continues, and his testosterone level and semen volume remain essentially unchanged.
• CSperm are still present in his ejaculate in normal numbers, but they are immobile because the seminal plasma has become acidic.
• DSperm are absent from his ejaculate because the testes have shifted to the abdominal cavity, and semen volume has doubled to compensate.

Q7 · Zoology · Reproductive Health

Trichomoniasis, an STD in humans, is caused by which type of organism?

• AA bacterium
• BA virus
• CA protozoan parasite
• DA fungus

Q8 · Zoology · Reproductive Health

In Zygote Intrafallopian Transfer (ZIFT), which material is transferred into the fallopian tube of the female?

• AA mixture of unfertilised ova and sperm collected from the couple
• BA zygote, or an early embryo up to the 8-blastomere stage, formed by in vitro fertilisation
• CAn embryo with 16 or more blastomeres, placed directly into the uterus
• DUnfertilised ova alone, collected after superovulation and returned to the tube

Q9 · Zoology · Reproductive Health

Hepatitis-B, an STD that can also spread through contaminated blood, is compared with AIDS for the purpose of prevention. Which statement correctly identifies a difference between the two that is relevant to controlling spread at the population level?

• AHepatitis-B can be prevented by a widely used vaccine, whereas no vaccine is in routine use for AIDS, so vaccination is a usable population-level control for hepatitis-B but not for AIDS.
• BHepatitis-B is caused by a bacterium that is killed by antibiotics, whereas AIDS is caused by a virus that antibiotics cannot treat, so antibiotics control hepatitis-B spread but not AIDS.
• CHepatitis-B spreads mainly by contaminated food and water like typhoid, whereas AIDS spreads only through sexual contact, so sanitation controls hepatitis-B but not AIDS.
• DHepatitis-B and AIDS are both caused by the same RNA retrovirus, so a single vaccine protects against both diseases equally well.

Q10 · Zoology · Reproductive Health

In amniocentesis, the fluid withdrawn from the amniotic cavity contains foetal cells. What is the main source of these cells?

• AMaternal blood that crosses the placenta into the amniotic cavity
• BCells shed from the foetus's skin, urinary tract and other tissues into the amniotic fluid
• CSecretions of the uterine lining (endometrium)
• DSperm cells that remain in the uterus after fertilisation