Chapter 3: Reproductive Health Long Questions | biology Class 12 CBSE

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Chapter 3: Reproductive Health Long Questions | biology Class 12 CBSE | ByteNotes.in

Long Answer

Medium difficulty • Structured explanation

Medium

Question 1

Long Form

Describe the various strategies adopted under Reproductive and Child Health Care (RCH) programmes in India to improve reproductive health.

Awareness creation through audio-visual and print media, with contributions from parents, teachers, and non-governmental agencies, forms the primary strategy; sex education in schools is encouraged to dispel myths among adolescents.
Educating fertile couples about contraceptive options, care of pregnant mothers, post-natal care, importance of breast-feeding, and equal opportunities for male and female children helps build socially conscious families.
Strong infrastructural facilities, professional expertise, and material support are provided for medical assistance in pregnancy, delivery, STDs, abortions, contraception, menstrual problems, and infertility.
Statutory ban on amniocentesis for sex determination checks female foeticide, while massive child immunisation programmes protect infant health.
Research supported by governmental and non-governmental agencies leads to development of new methods like Saheli and improvement of existing techniques, ensuring progressive reproductive health care.

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Long Answer

Hard difficulty • Structured explanation

Hard

Question 2

Long Form

Compare and contrast the different types of Intra Uterine Devices (IUDs) available and explain their mechanisms of action.

Non-medicated IUDs such as the Lippes loop work by creating a non-specific inflammatory response in the uterus that increases phagocytosis of sperms, making the uterus inhospitable for fertilisation.
Copper-releasing IUDs like CuT, Cu7, and Multiload 375 release copper ions that additionally suppress sperm motility and reduce the fertilising capacity of sperms, making them more effective than non-medicated IUDs.
Hormone-releasing IUDs such as Progestasert and LNG-20 act by making the uterine environment unsuitable for implantation and altering the cervical mucus to make it hostile to sperms.
All IUD types are inserted by doctors or expert nurses through the vagina into the uterus; they are ideal for females who wish to delay or space pregnancies and are among the most widely accepted contraceptive methods in India.
The key difference lies in their mechanism: non-medicated IUDs act physically, copper IUDs add ionic spermicidal action, and hormonal IUDs additionally affect implantation and cervical mucus — making hormonal IUDs the most multi-mechanistic.

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Long Answer

Hard difficulty • Structured explanation

Hard

Question 3

Long Form

Analyse the causes, consequences, and measures adopted in India to control population explosion.

Causes include rapid decline in death rate, maternal mortality rate (MMR), and infant mortality rate (IMR) due to improved health facilities, leading to more survivors entering the reproductive age group.
India's population grew from 350 million at independence to over 1.2 billion by 2011; the 2011 census showed a growth rate of less than 2 per cent per year — still alarming and threatening basic resource availability.
Consequences include the possibility of absolute scarcity of food, shelter, and clothing despite significant development, and increased pressure on infrastructure and social services.
The government promotes contraceptive use through RCH programmes and media campaigns like 'Hum Do Hamare Do'; urban working couples have even adopted a one-child norm.
Statutory raising of the marriageable age (females to 18, males to 21) and incentives for small families are complementary legislative measures to reduce the birth rate and stabilise population growth.

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Long Answer

Hard difficulty • Structured explanation

Hard

Question 4

Long Form

Describe the various Assisted Reproductive Technologies (ART) available for infertile couples and distinguish between IVF–ET and GIFT.

In IVF–ET (In Vitro Fertilisation–Embryo Transfer), ova and sperms are collected and induced to form a zygote under simulated laboratory conditions; the embryo is then transferred into the fallopian tube (ZIFT, up to 8 blastomeres) or uterus (IUT, more than 8 blastomeres).
GIFT (Gamete Intra Fallopian Transfer) involves transferring a donor ovum into the fallopian tube of a recipient female who cannot produce ova but can support fertilisation and development — here, fertilisation occurs in vivo unlike IVF.
ICSI (Intra Cytoplasmic Sperm Injection) is used when conventional IVF fails; a single sperm is directly injected into the ovum, forming an embryo in the laboratory for subsequent transfer.
AI (Artificial Insemination) is used when the male cannot inseminate the female or has very low sperm count; donor or husband semen is introduced into the vagina or uterus (IUI).
All ART methods require specialised professionals and expensive instrumentation, limiting their availability to very few centres and making legal adoption an equally valid and encouraged alternative for infertile couples.

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Long Answer

Medium difficulty • Structured explanation

Medium

Question 5

Long Form

Critically evaluate the role and limitations of surgical methods of contraception.

Surgical methods — vasectomy in males and tubectomy in females — are the most effective contraceptive options available, achieving near-complete prevention of pregnancy by blocking gamete transport.
Vasectomy involves removing or tying a small part of the vas deferens through a scrotal incision, while tubectomy involves removing or tying a section of the fallopian tube through an abdominal or vaginal incision.
These are terminal methods recommended only when a couple does not desire any more pregnancies; they should not be confused with gonad removal as sex hormone production and sexual function remain intact.
Their major limitation is very poor reversibility — once performed, surgical restoration of fertility is extremely difficult, making the decision irreversible in most cases.
The decision to opt for surgical contraception must always be taken in consultation with qualified medical professionals, ensuring informed consent and ruling out the possibility of future desired pregnancies.

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Long Answer

Hard difficulty • Structured explanation

Hard

Question 6

Long Form

Discuss the legal, ethical, and medical aspects of Medical Termination of Pregnancy (MTP) in India.

MTP was legalised in India in 1971 under strict conditions; the MTP (Amendment) Act, 2017 allows termination within 12 weeks with one doctor's opinion and between 12–24 weeks with two doctors' opinions.
Legal grounds for termination include risk to the mother's life or grave physical/mental health injury, and substantial risk of a seriously handicapped child, ensuring MTP is not misused arbitrarily.
MTPs are medically safe in the first trimester (up to 12 weeks) but carry significantly higher risks in the second trimester, including complications such as haemorrhage and infection.
A disturbing trend is illegal MTPs performed by unqualified practitioners, which are unsafe and frequently fatal; misuse of amniocentesis for sex determination followed by female foeticide is also a major ethical concern.
Effective counselling on unprotected coitus risks, improved healthcare access, and strict enforcement of the ban on sex-determination use of amniocentesis are essential to prevent misuse and reduce unsafe abortions.

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Long Answer

Medium difficulty • Structured explanation

Medium

Question 7

Long Form

Explain the transmission, symptoms, complications, and prevention of Sexually Transmitted Infections (STIs).

STIs are primarily transmitted through sexual intercourse; some like hepatitis-B and HIV can also spread through shared needles, blood transfusion, or from an infected mother to the foetus.
Early symptoms are often minor — itching, fluid discharge, slight pain, and swellings in the genital region; infected females may be asymptomatic, allowing undetected spread.
Absence of noticeable symptoms and the social stigma associated with STIs deter individuals from seeking timely medical attention, leading to complications.
Complications from untreated STIs include pelvic inflammatory diseases (PID), abortions, still births, ectopic pregnancies, infertility, and cancer of the reproductive tract.
Prevention involves avoiding sex with unknown/multiple partners, consistent condom use during coitus, and early medical consultation for diagnosis and complete treatment when infection is suspected.

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Long Answer

Hard difficulty • Structured explanation

Hard

Question 8

Long Form

Evaluate oral contraceptive pills as a method of birth control, including their mechanism, advantages, and disadvantages.

Oral pills contain progestogens or progestogen-estrogen combinations and must be taken daily for 21 days, starting within the first five days of the menstrual cycle, followed by a 7-day gap during which menstruation occurs.
They inhibit ovulation and implantation, and alter the quality of cervical mucus to prevent or retard sperm entry, providing multiple levels of contraceptive protection.
Pills are very effective with lesser side effects and are well-accepted by females; Saheli, a non-steroidal once-a-week pill developed by CDRI, offers even greater convenience with high contraceptive value.
Injectables and implants use the same hormonal principle as pills but with much longer effective periods, making them suitable for women who may not reliably take daily pills.
Potential ill-effects include nausea, abdominal pain, breakthrough bleeding, irregular menstrual bleeding, and a possible (though not common) risk of breast cancer, which should be discussed with medical professionals before use.

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Long Answer

Hard difficulty • Structured explanation

Hard

Question 9

Long Form

How does infertility differ from sterility, and what are the various causes and treatment options available for infertile couples?

Infertility is defined as the inability to produce children despite unprotected sexual cohabitation; it can be due to physical, congenital, disease-related, drug-induced, immunological, or psychological causes in either partner.
A common misconception is that infertility is always the female's fault; in reality, the problem often lies with the male partner, and proper diagnosis is essential before attributing cause.
Specialised infertility clinics can diagnose and offer corrective treatment for some disorders; where correction is not possible, ART methods such as IVF-ET, GIFT, ICSI, and AI are employed.
ART options are expensive, require highly specialised personnel and equipment, and are available only at a few centres, making them inaccessible to many couples in India.
Legal adoption is strongly encouraged as an alternative route to parenthood, particularly given India's large number of orphaned and destitute children who need care — it is considered one of the best methods for couples seeking parenthood.

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Long Answer

Medium difficulty • Structured explanation

Medium

Question 10

Long Form

Compare natural methods and barrier methods of contraception in terms of their principles, examples, effectiveness, and limitations.

Natural methods work on the principle of avoiding chances of ovum and sperm meeting without using any device or medicine; they include periodic abstinence, coitus interruptus, and lactational amenorrhea.
Barrier methods physically prevent sperm from reaching the ovum using devices; examples include male and female condoms, diaphragms, cervical caps, and vaults, often supplemented with spermicidal creams.
Natural methods have almost no side effects since no medicines or devices are used; however, they have a high failure rate due to difficulty in precise application and unpredictable physiological variation.
Barrier methods, especially condoms, offer the additional benefit of protecting against STIs and AIDS, which natural methods cannot provide.
Both natural and barrier methods are reversible, user-controlled, and do not require medical procedures; however, barrier methods are generally more reliable than natural methods, particularly condoms when used consistently and correctly.

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Chapter 3: Reproductive Health | Long Questions

Describe the various strategies adopted under Reproductive and Child Health Care (RCH) programmes in India to improve reproductive health.

Compare and contrast the different types of Intra Uterine Devices (IUDs) available and explain their mechanisms of action.

Analyse the causes, consequences, and measures adopted in India to control population explosion.

Describe the various Assisted Reproductive Technologies (ART) available for infertile couples and distinguish between IVF–ET and GIFT.

Critically evaluate the role and limitations of surgical methods of contraception.

Discuss the legal, ethical, and medical aspects of Medical Termination of Pregnancy (MTP) in India.

Explain the transmission, symptoms, complications, and prevention of Sexually Transmitted Infections (STIs).

Evaluate oral contraceptive pills as a method of birth control, including their mechanism, advantages, and disadvantages.

How does infertility differ from sterility, and what are the various causes and treatment options available for infertile couples?

Compare natural methods and barrier methods of contraception in terms of their principles, examples, effectiveness, and limitations.

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