Topics
Sexual Reproduction in Flowering Plants
- Flower
- Pre-fertilisation in Flowering Plant: Structures and Events
- Structure and Development of Anther
- Microsporogenesis
- Structure and Development of Male Gametophyte
- Pollen Viability and Storage
- Structure and Development of Ovule
- Megasporogenesis
- Development of Female Gametophyte or Embryo Sac
- Pollination
- Autogamy
- Geitonogamy
- Cross-pollination
- Agents of Pollination
- Anemophily
- Hydrophily
- Animal-Mediated Pollination (Zoophily)
- Outbreeding Devices
- Pollen Pistil Interaction
- Artificial Hybridization or Artificial Fertilization
- Double Fertilization and Triple Fusion
- Events in Sexual Reproduction > Post-Fertilization Structures and Events
- Endosperm
- Embryo
- The Seed
- Apomixis
- Polyembryony
Reproduction
Reproduction in Organisms
Human Reproduction
- Human Reproduction
- The Male Reproductive System
- The Female Reproductive System
- Gametogenesis
- Spermatogenesis
- Structure of Sperm
- Spermiogenesis
- Oogenesis
- Menstrual Cycle (Ovarian Cycle)
- Major Events of Menstrual Cycle
- Menstrual Hygiene
- Fertilisation in Human
- Implantation in Human
- Pregnancy and Embryonic Development
- Parturition (Birth) in Human
- Lactation in Human
Genetics and Evolution
Reproductive Health
- Concept of Reproductive Health
- Population Explosion and Control Measures
- Birth Control
- Natural Contraceptive Methods
- Artificial Contraceptive Methods
- Induced Abortion or Medical Termination of Pregnancy (MTP)
- Sexually Transmitted Diseases (STD) or Sexually Transmitted Infections (STI)
- Infertility
- Assisted Reproductive Technology (ART)
- Amniocentesis
- Genetic Counselling
Biology and Human Welfare
Principles of Inheritance and Variation
- Heredity and Variation
- Gregor Johann Mendel – Father of Genetics
- Mendel's Experiments on Inheritance
- Monohybrid Cross
- Punnett Square
- Back Cross and Test Cross
- Mendel's Laws > The Law of Dominance
- Mendel's Laws > The Law of Segregation (Law of Purity of Gametes)
- Exceptions to Mendel's Principles > Incomplete Dominance
- Exceptions to Mendel's Principles > Co-Dominance
- Dihybrid Cross
- Mendel's Laws > The Law of Independent Assortment
- Chromosomal Theory of Inheritance
- Linkage and Recombination
- Polygenic Inheritance
- Exceptions to Mendel's Principles > Pleiotropy
- Sex Determination
- Sex Determination in Humans
- Sex Determination in Honey Bees
- Mutations
- Pedigree Analysis
- Mendelian Disorders in Humans
- Chromosomal Disorders or Abnormalities
Environmental Issues
- Controlling Vehicular Air Pollution: a Case Study of Delhi
- Effects of Domestic Sewage and Industrial Effluents on Water
- Solid Wastes
- Radioactive Wastes
- Greenhouse Effect and Climate Change
- Ozone Depletion in the Stratosphere
- Degradation by Improper Resource Utilisation and Maintenance
- Radioactive Waste Management and E-waste
Biotechnology
Ecology
Molecular Basis of Inheritance
- Deoxyribonucleic Acid (DNA)
- Structure of Polynucleotide Chain
- Packaging of DNA Helix
- Search for Genetic Material
- Griffith’s Experiment
- Avery, McCarty and MacLeod’s Experiment
- The Hershey-Chase Experiment
- Properties of Genetic Material
- The RNA World
- DNA Replication
- Conservative Replication
- Dispersive Replication
- Semi-Conservative Replication
- Meselson and Stahl’s Experiment
- Enzymes used in DNA Replication
- Mechanism of DNA Replication
- Protein Synthesis
- Reverse Transcription (Teminism)
- Transcription
- Transcription Unit and the Gene
- Process of Transcription in Bacteria
- Process of Transcription in Eukaryotes
- Genetic Code
- Characteristics of the Genetic Code
- Mutations and Genetic Code
- tRNA – the Adapter Molecule
- Translation
- Regulation of Gene Expression
- The Lac Operon
- Human Genome Project
- DNA Fingerprinting
Evolution
Human Health and Diseases
- Concept and Determinants of Health
- Modes of Transmission of Diseases through Pathogens
- Diseases Caused by Bacteria > Typhoid
- Diseases Caused by Bacteria > Pneumonia
- Diseases Caused by Viruses > Common Cold
- Diseases Caused by Protozoa > Malaria
- Diseases Caused by Protozoa > Amoebiasis (Amoeboic dysentery)
- Diseases Caused by Helminths > Ascariasis
- Diseases Caused by Helminths > Filariasis (Elephantiasis)
- Diseases Caused by Fungi > Ringworm
- Prevention and Control of Infectious Diseases
- Immunity
- Types of Immunity > Innate Immunity
- Types of Immunity > Acquired Immunity
- Vaccination and Immunization
- Allergies
- Autoimmunity
- The Immune System
- Acquired Immuno Deficiency Syndrome (AIDS)
- Cancer
- Causes of Cancer
- Symptoms and Diagnosis of Cancer
- Prevention/Treatment of Cancer
- Drugs and Alcohol Abuse
- Addiction and Dependence
- Effects of Drug and Alcohol Abuse
- Prevention and Control of Drugs and Alcohol Abuse
Strategies for Enhancement in Food Production
Microbes in Human Welfare
Biotechnology - Principles and Processes
Biotechnology and Its Application
Organisms and Populations
- Organisms and Their Environment
- Ecology
- Population Attributes
- Population Growth
- Life History Variation
- Population Interactions
- Negative Interactions > Predation
- Negative Interactions > Competition
- Negative Interactions > Parasitism
- Positive Interactions > Commensalism
- Positive Interactions > Mutualism (Symbiosis)
- Overview of Organisms and Populations
Ecosystem
Biodiversity and Its Conservation
Maharashtra State Board: Class 12
CISCE: Class 12
Definition: Induced Abortion or Medical Termination of Pregnancy (MTP)
Intentional or voluntary termination of pregnancy before full term is called medical termination of pregnancy (MTP) or induced abortion.
Maharashtra State Board: Class 12
CISCE: Class 12
Introduction
MTP (Medical Termination of Pregnancy) is the deliberate ending of a pregnancy by medical or surgical means before the foetus is viable - i.e., capable of surviving outside the womb. It is distinct from a spontaneous abortion (miscarriage), which occurs naturally without intervention. In everyday language, MTP is also called induced abortion.
Why MTP is Necessary?
MTP is not performed casually - it is permitted under specific, legally defined grounds. These include:
- Contraceptive failure: failure of any birth control device or method (includes unmarried women under the 2021 amendment)
- Risk to the mother's physical or mental health: if continuing the pregnancy endangers the woman's wellbeing
- Foetal abnormalities: severe chromosomal or genetic defects detected prenatally (e.g., Down syndrome, Klinefelter syndrome)
- Pregnancy due to rape or incest: survivors are a special category under the 2021 Act
- Humanitarian grounds: vulnerable women, including minors and differently-abled individuals
Important: MTP is NOT a substitute for contraception. Its primary justification is to end unwanted or medically risky pregnancies under controlled conditions.
Maharashtra State Board: Class 12
CISCE: Class 12
Legal Framework: MTP Acts
MTP Act, 1971:
India passed the Medical Termination of Pregnancy Act, 1971 (Act No. 34 of 1971) to provide safe, legal abortions and reduce maternal mortality from unsafe procedures.
Original provisions:
- Termination allowed up to 12 weeks with the consent of 1 Registered Medical Practitioner (RMP)
- Termination from 12–20 weeks required the consent of 2 RMPs
- Abortion had to be performed at a government-approved facility
MTP Amendment Act, 2021 (Current Law):
The MTP (Amendment) Act, 2021 came into force on 25 March 2021 and significantly expanded access to safe abortions.
Key changes under the 2021 Amendment:
| Provision | MTP Act 1971 | MTP Amendment 2021 |
|---|---|---|
| Termination up to 20 weeks | 2 RMPs required | 1 RMP sufficient |
| Termination 20–24 weeks | Not allowed (except by court) | 2 RMPs required for special categories |
| Beyond 24 weeks | Not permitted | State Medical Board decides for substantial foetal abnormalities |
| Unmarried women | Contraceptive failure clause only for married women | Includes unmarried women |
| Special categories | Not defined | Rape/incest survivors, minors, differently-abled, women with foetal abnormalities |
| Confidentiality | Not explicit | Name/details of woman cannot be disclosed, except as per law |
Maharashtra State Board: Class 12
CISCE: Class 12
Safety and Trimester-wise Guidelines
MTP safety is strongly tied to gestational age - the earlier the procedure, the safer it is.
| Trimester | Duration | Procedure | Safety | Doctor Requirement |
|---|---|---|---|---|
| 1st Trimester | 0–12 weeks | D&C, Vacuum Aspiration, Medical (pills) | Generally Safe | 1 RMP |
| 2nd Trimester | 13–24 weeks | D&E, Prostaglandin induction | Higher Risk | 2 RMPs (for special categories) |
| Beyond 24 weeks | >24 weeks | Only for severe foetal abnormalities | Very High Risk | State Medical Board |
Maharashtra State Board: Class 12
CISCE: Class 12
Methods and Procedures
Surgical Methods
1. Dilatation and Curettage (D&C)
- The cervix is mechanically dilated using thin rods
- A curette or suction cannula removes uterine contents
- Used up to 13–16 weeks of gestation
- Both D&C and vacuum aspiration are safe and effective for first-trimester termination
2. Vacuum Aspiration (Suction Curettage)
- The preferred method up to 12 weeks of gestation
- A thin tube (cannula) is inserted through the cervix; a suction device empties the uterus
- Manual Vacuum Aspiration (MVA): uses a hand-held syringe; portable, cost-effective
- Electric Vacuum Aspiration (EVA): uses an electric pump; preferred after 9 weeks
- Procedure takes approximately 5–10 minutes; recovery takes 30–60 minutes
3. Dilatation and Evacuation (D&E)
- Used for 2nd trimester terminations (≥14 weeks)
- Requires additional cervical preparation (e.g., laminaria, misoprostol)
- More complex than D&C; requires skilled obstetricians
Medical/Pharmacological Methods:
4. Prostaglandin Administration
- Prostaglandins (e.g., PGE₂, PGF₂α, misoprostol) induce uterine contractions
- Used in late 1st and 2nd trimester terminations to stimulate labour-like contractions
- Can be administered vaginally, orally, or by injection
- Also used as cervical preparation before surgical procedures
Maharashtra State Board: Class 12
CISCE: Class 12
Ethical and Social Dimensions
- MTP and Female Foeticide are NOT the same. MTP under legal grounds is a woman's reproductive right; female foeticide is a criminal act.
- The MTP Act, 1971 was introduced to protect women from unsafe, illegal abortions and to prevent misuse for female foeticide.
- While MTP provides an important safety net, the government strongly emphasises contraception as the primary choice - MTP is NOT a routine contraceptive method.
- The 2021 amendment reinforces women's autonomy and confidentiality - a woman's identity in MTP cases cannot be legally disclosed.
- Only doctors with specialisation in Gynaecology or Obstetrics are authorised to perform MTP.
Maharashtra State Board: Class 12
CISCE: Class 12
Key Points: Induced Abortion or Medical Termination of Pregnancy (MTP)
- Medical Termination of Pregnancy (MTP) is the voluntary termination of pregnancy before full term, also called induced abortion.
- MTP is done in cases of unwanted pregnancy or when fetal abnormalities are detected, often using amniocentesis.
- Amniocentesis is a diagnostic test that collects amniotic fluid to study fetal chromosomes and detect genetic defects.
- MTP is legally allowed in India under the MTP Act (1971, amended 2017), with conditions and is generally safe in the first 12 weeks.
- It requires the woman’s consent and a doctor’s approval, and is allowed only when pregnancy risks the mother’s life or involves serious fetal abnormalities.
