The NCERT book biology class 12 is the widest-ranging biology syllabus in the NCERT sequence, directly relevant to board exams and NEET; this class 12 ncert biology book pdf covers every chapter below.
What’s in the Class 12 Biology NCERT Book (2026-27 Edition)
The book opens with Reproduction in Organisms through Human Reproduction and Reproductive Health, moves into Principles of Inheritance and Variation and Molecular Basis of Inheritance, then Evolution and Human Health and Disease, closing with Biotechnology: Principles and Processes and its Applications.
Study Tip
Molecular Basis of Inheritance and Biotechnology are the two most NEET-weighted chapters here — if preparing for both board and NEET, prioritise these once the reproduction basics are solid.
Use the download button above to access this book on the official NCERT source.
Chapters in This Book
Chapter links on this page were last automatically re-checked against the official NCERT source on August 14, 2026.
All 14 chapters below link directly to the official NCERT source (ncert.nic.in) — nothing is hosted on this site. Click “Read” to open a chapter, or “Download” to save it. You can also open the full book in our chapter-by-chapter reader.
Prefer the whole book at once? Download Complete Book (ZIP)
Why This Book Is Critical for NEET and Boards
Class 12 Biology carries the single largest share of any one book in the NEET syllabus, and its influence goes beyond just topic coverage. NEET Biology questions are known for staying unusually close to the exact phrasing, examples, and diagrams used in the NCERT textbook itself — a pattern far more pronounced here than in Physics or Chemistry, where questions are usually application- or numerical-based. This means a student who has read this book line by line, including the fine-print notes and diagram labels, often has a real edge over one who has only studied condensed notes or guidebooks that paraphrase the content.
Is the NCERT Class 12 Biology book available in Hindi medium?
Yes — NCERT publishes the Class 12 Biology textbook in Hindi medium as well; the chapter numbers, questions, and figures are identical, only the language of instruction differs.
Is this the current 2026-27 edition?
This page links directly to the official 2026-27 NCERT Class 12 Biology textbook PDF published on ncert.nic.in.
Frequently Asked Questions
Is this the current 2026-27 NCERT edition?
Yes — every chapter linked above is pulled directly from the official NCERT source at ncert.nic.in, so it always reflects whatever NCERT currently has published for Class 12 Biology for the 2026-27 academic session.
Why does this book matter for board exams?
Class 12 is a CBSE board exam year, so this book’s chapters form the direct basis for the board syllabus. Downloading the official version (rather than a summarized or third-party copy) ensures you’re studying from the exact source the exam is set against.
How many chapters does the Class 12 Biology NCERT book have?
The book has 13 chapters in total, covering reproduction, genetics, evolution, human health, and biotechnology, plus the front matter section.
Is this book available in Hindi medium?
Yes, NCERT publishes a Hindi-medium edition of this book on its official textbooks portal alongside the English edition.
Can I read this book offline after downloading?
Yes, once downloaded, the chapter PDFs and ZIP file can be studied anytime without needing an internet connection.
Is NCERT Biology enough for NEET preparation?
NCERT is widely regarded as the single most important source for NEET Biology, since a large share of questions are based directly on its text, though most serious aspirants also solve additional MCQ practice sets.
Which chapters are most important for NEET?
Genetics and Evolution, Human Reproduction and Reproductive Health, and Biotechnology are consistently high-weightage topics for NEET, alongside Human Health and Disease.
Should I study the NCERT Exemplar alongside this textbook?
Yes, especially for NEET preparation — the Exemplar offers additional conceptual questions that go slightly beyond the main textbook’s exercises.
Are diagrams from this textbook important for exams?
Yes, diagram-based questions are common in both board exams and NEET, so studying the labelled diagrams in each chapter closely is just as important as reading the text.
How should I revise this book before exams?
Read each chapter for its core concepts first, then revisit diagrams and in-text questions, and finally practice previous years’ board and NEET questions based on each topic.
Are these NCERT download links official and safe?
Yes, every link on this page points directly to ncert.nic.in, NCERT’s own official domain, with no third-party redirects.
Where can I find the other Class 12 NCERT subject books?
This site hosts free PDF download pages for all Class 12 NCERT subjects, including Physics, Chemistry, Mathematics, English, and Hindi — check the Class 12 catalog for the full list.