NCERT Biology for NEET 2027: Every Class 11 & 12 Chapter (Free PDF)

If you are preparing for NEET, NCERT Biology is not one source among many — it is the source. Biology is half the paper, and the questions are written from the language, diagrams and examples of the NCERT textbooks.

This page lists every chapter of the current NCERT Biology books for Class 11 and Class 12, each linked to a free PDF you can read online or download. No login.

Quick answer

• Class 11 NCERT Biology: 19 chapters, 252 pages — read or download
• Class 12 NCERT Biology: 13 chapters, 228 pages — read or download
• Both books together: 32 chapters, 480 pages. That is the whole Biology syllabus.

You can also download each book as one PDF using the “Download full book” button on the subject page.

Class 11 NCERT Biology — all chapters

1. The Living World — 9 pages
2. Biological Classification — 13 pages
3. Plant Kingdom — 14 pages
4. Animal Kingdom — 18 pages
5. Morphology of Flowering Plants — 16 pages
6. Anatomy of Flowering Plants — 8 pages
7. Structural Organisation in Animals — 6 pages
8. Cell: The Unit of Life — 19 pages
9. Biomolecules — 16 pages
10. Cell Cycle and Cell Division — 11 pages
11. Photosynthesis in Higher Plants — 22 pages
12. Respiration in Plants — 13 pages
13. Plant Growth and Development — 15 pages
14. Breathing and Exchange of Gases — 12 pages
15. Body Fluids and Circulation — 12 pages
16. Excretory Products and their Elimination — 12 pages
17. Locomotion and Movement — 13 pages
18. Neural Control and Coordination — 9 pages
19. Chemical Coordination and Integration — 14 pages

Class 12 NCERT Biology — all chapters

1. Sexual Reproduction in Flowering Plants — 25 pages
2. Human Reproduction — 15 pages
3. Reproductive Health — 10 pages
4. Principles of Inheritance and Variation — 28 pages
5. Molecular Basis of Inheritance — 31 pages
6. Evolution — 17 pages
7. Human Health and Disease — 22 pages
8. Microbes in Human Welfare — 12 pages
9. Biotechnology: Principles and Processes — 16 pages
10. Biotechnology and its Applications — 11 pages
11. Organisms and Populations — 17 pages
12. Ecosystem — 11 pages
13. Biodiversity and Conservation — 13 pages

In what order should you read NCERT Biology for NEET?

There is no single correct order, but this one works for most students because it builds each idea before it is needed:

1. Cell first. Cell: The Unit of Life, Biomolecules and Cell Cycle and Cell Division (Class 11) are the vocabulary for everything else.
2. Then genetics. Principles of Inheritance and Variation and Molecular Basis of Inheritance (Class 12) lean directly on cell division.
3. Human physiology as one block. Class 11 chapters 14–19 (breathing, circulation, excretion, locomotion, neural and chemical control) read best back to back.
4. Plant physiology as one block. Photosynthesis, respiration in plants, and plant growth.
5. Diversity and structure. The Living World through Structural Organisation in Animals — these are heavy on names and examples, so do them in short daily sessions rather than one long sitting.
6. Reproduction, biotech, ecology from Class 12 to finish.

How to actually read NCERT Biology

• Read every line, including boxes, figure captions and tables. Many questions come from text that students skim past.
• Redraw the diagrams. If you can draw and label it from memory, you can answer the question about it.
• One page of notes per chapter. You will revise from these, not from the book, in the last two months.
• Read it more than once. The first read is for understanding. The second and third reads are where the details stick.

Printing NCERT Biology

If you print chapters, put two textbook pages on one A4 sheet with the free pages-per-sheet tool — the text stays readable and you use half the paper.

Related: NEET 2027: a realistic 1-year preparation plan.