Updated 6 August 2026·15 chapters

ICSE Class 12 Biology — Syllabus 2026-27

ICSE Class 12 Biology syllabus for 2026-27: all 15 chapters, with the topics in each. Follows the ICSE / ISC syllabus.

About this syllabus

The ICSE Class 12 Biology course for 2026-27 has 15 chapters. Chapters with a topic breakdown link to their own syllabus page.

ICSE Class 12 Biology — Chapter List

#	Chapter	Topics
1	Sexual Reproduction in Flowering Plants	Flower Structure and the Life Cycle of Angiosperms · Microsporogenesis and Pollen Grain Structure · Development of Male Gametophyte
2	Human Reproduction	Human Reproductive System · Male Reproductive System · Female Reproductive System
3	Reproductive Health	Reproductive Health: Meaning and Need · Population Explosion and Birth Control · Natural Methods of Contraception
4	Principles of Inheritance and Variation	Heredity, Variation, and Mendel’s Work · Mendel’s Laws and Basic Crosses · Deviations from Mendelism: Incomplete Dominance, Co-dominance, Pleiotropy, and Multiple Alleles
5	Molecular Basis of Inheritance	Genes and the Nature of Genetic Material · DNA and RNA: Structure and Base Composition · DNA Double Helix and Packaging of DNA
6	Origin of life	Universe, Earth, and the setting for life · Early ideas about origin of life · Experimental proof of biogenesis
7	Evidences and Theories of Biological Evolution	Evidences of Organic Evolution · Palaeontological Evidence · Fossil Series, Mass Extinction, and Geological Time Scale
8	Human Evolution	Place of Man in Animal Kingdom · Prior to Ape Man · The Ape Man
9	Human Health and Disease	Health and Disease · Communicable Diseases and Pathogens · Bacterial Diseases
10	Microbes in Human Welfare	Microbes in Household Products · Microbes in Industries · Microbes in Sewage Treatment
11	Principles and Processes of Biotechnology	Applications, Gene Therapy, and Ethical Issues
12	Biotechnology and its Applications	Biotechnology in Agriculture · Bt Cotton and Cry Proteins · Pest-Resistant Plants and RNA Interference
13	Organisms and Populations	Levels of Ecological Organisation · Population Interactions · Examples of Positive and Negative Interactions
14	Ecosystem	Meaning, Origin, and Types of Ecosystem · Components of Ecosystem · Food Chain, Trophic Levels, and Food Web
15	Biodiversity and Conservation	Meaning, Types, and Definition of Biodiversity · Types of Biodiversity with Examples · Global Biodiversity and Patterns

Preparation Strategy

Finish the textbook first — the prescribed textbook is the main source for school and board exams.
Keep a formula and definitions list — it makes last-week revision much faster.
Practise past papers — they show you the pattern questions follow.
Time your practice — attempt some papers under exam conditions.

Get chapter-wise help for ICSE Class 12 Biology

Super Tutor gives you chapter summaries, revision notes, practice quizzes and flashcards, organised around the ICSE syllabus. Free to start.

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Frequently Asked Questions

Where can I find ICSE Class 12 Biology Syllabus?

This page has syllabus for 15 chapters of ICSE Class 12 Biology for the board exams 2027. Each chapter links to its own page with the full set.

How should I prepare for ICSE Class 12 Biology board exams?

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Has the ICSE Class 12 Biology syllabus changed for 2026-27?

This page lists the chapters in the current ICSE Class 12 Biology course. Boards revise syllabi from time to time, so check the board's official website for the latest notified syllabus.

More Biology Resources

ICSE Class 12

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Revision Notes

Key concepts and quick revision points

Formula Sheet

The formulas of each chapter in one place

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Study Plan

Week-by-week preparation schedule

Flashcards

Quick-fire cards for active recall practice

Other ICSE Class 12 Subjects

Physics Chemistry Mathematics Accountancy Business Studies Economics History Geography