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NCERT Books for Class 12 Biology 2025-26: Download Free PDF

NCERT Books for Class 12 Biology 2025-26: Download Free PDF

Edited By Irshad Anwar | Updated on May 19, 2025 07:04 PM IST

NCERT books for class 12 biology (2025-26) are published by the National Council of Education Research and Training (NCERT) and follow the latest National Curriculum Framework. These books are widely used by CBSE and most state boards across India. Since biology is mostly theoretical, many students find it easier than physics or chemistry, but scoring well still requires regular and thorough study. Students should refer to the latest edition of the NCERT Class 12 biology book to stay updated with any syllabus changes. Many learning platforms also offer chapter-wise notes, summaries and practice material to make learning even more effective.

This Story also Contains
  1. Download the NCERT Class 12 Biology Book PDF here
  2. Access the NCERT Book for Class 12 Biology
  3. NCERT Class 12 Biology Book Chapters and Study Tips
  4. Best NCERT Biology Class 12 Reference Books
NCERT Books for Class 12 Biology 2025-26: Download Free PDF
NCERT Books for Class 12 Biology 2025-26: Download Free PDF

The NCERT Class 12 Biology textbook is important for establishing a strong foundation because it presents concepts in a simplified and clear way. Several questions in CBSE board examinations and competitive exams such as NEET directly follow from this textbook, which makes it useful for exam preparations. The book contains all the important chapters covered under the CBSE class 12 Syllabus, providing students with standardised and well-organised material.

Download the NCERT Class 12 Biology Book PDF here

Students can also refer to the NCERT exemplar class 12 biology book PDF for better preparation. Read the article to know how to download NCERT books for Class 12 Biology online for free.

Download NCERT Class 12 Biology Book PDF

Chapters of the NCERT Book for Class 12 Biology 2025-26

This book of NCERT Class 12 biology is prescribed in most of the CBSE board schools, and hence, it gives relevant information about the respective subject. Chapter-wise links to the NCERT Biology book are tabulated below:

Chapter no.

English Medium

Hindi Medium

Chapter 1

Sexual Reproduction in Flowering Plantsपुष्पी पादपों में लैंगिक प्रजनन

Chapter 2

Human Reproductionमानव जनन

Chapter 3

Reproductive Healthजन स्वास्थ्य

Chapter 4

Principles of Inheritance And Variationवंशागति तथा विविधता के सिद्धांत

Chapter 5

Molecular Basis of Inheritanceवंशागति के आणविक आधार

Chapter 6

Evolutionविकास

Chapter 7

Human Health and Diseaseमानव स्वास्थ्य तथा रोग

Chapter 8

Microbes in Human Welfareमानव कल्याण में सूक्ष्मजीव

Chapter 9

Biotechnology Principles and Processesजैव प्रौद्योगिकी- सिद्धांत व प्रक्रम

Chapter 10

Biotechnology and its Applicationsजैव प्रौद्योगिकी एवं उसके उपयोग

Chapter 11

Organisms And Populationजीव और समष्टियाँ

Chapter 12

Ecosystemपारितंत्र

Chapter 13

Biodiversity and Conservationजैव-विविधता एवं संरक्षण

CBSE Class Date Sheet 2025

Access the NCERT Book for Class 12 Biology

Check the given steps to download NCERT Biology books for class 12th online :

  • Click on the respective chapter link or visit the official NCERT website.

  • As you scroll down, click on the textbook icon on the screen.

  • Then, click on ebooks, followed by the PDF icon.

  • Now, enter the class as XII, subject as biology, and book as Biology to access the book.

Also read -

NEET Highest Scoring Chapters & Topics
Most Scoring concepts For NEET (Based On Previous Year Analysis)
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Biology Class 12 Syllabus and Marking Scheme:

The marking scheme will help students understand the pattern of the exam and help them prepare well.

Unit

Titles

Marks

VI

Reproduction

16

VII

Genetics and Evolution

20

VIII

Biology and Human Welfare

12

IX

Biotechnology and Its Applications

12

X

Ecology and Environment

10


Total

70


NCERT Books for Class 12 Subject Wise

NCERT Book for Class 12 PhysicsNCERT Book for Class 12 Maths
NCERT Books for Class 12 ChemistryNCERT Books for Class 12 English
NCERT Book for Class 12 Hindi


NCERT Class 12 Biology Book Chapters and Study Tips

The NCERT Class 12 Biology textbook is divided into five major units, each dealing with various topics of biological sciences. Below is a brief description of these units, their chapters, and their importance in the CBSE Class 12 Biology syllabus for the 2025-26 session:

Unit VI: Reproduction (16 marks)

Use diagrammatic representations to learn about processes such as gametogenesis, fertilization, and embryonic development. Diagrams can increase understanding and recall of these subjects.

Unit VII: Genetics and Evolution (20 marks)

Mix theoretical study with diagrams, particularly for concepts such as DNA replication, transcription, and evolutionary relationships. Making brief notes can facilitate rapid revisions.

Unit VIII: Biology and Human Welfare (12 marks)

Mark important points to note important information regarding diseases, farming methods, and the function of microbes. The unit is not too long, making it possible to prepare within a short time.

Unit IX: Biotechnology and Its Applications (12 marks)

Focus on understanding the concepts and procedures of biotechnology. Personalised notes may be useful in understanding applications and ethical aspects.

Unit X: Ecology and Environment (10 marks)

Use flowcharts to trace ecological relationships, energy flow, and environmental problems. This helps in visualising and remembering intricate relationships.

Knowledge of the weightage of every unit can help in planning study effectively. For the latest syllabus and detailed data, visit the official CBSE curriculum or reliable educational websites.

Also, check -

Best NCERT Biology Class 12 Reference Books

Here is a list of the most recommended books for Class 12 Biology that help in CBSE board exam preparation and competitive exams like NEET.

  1. NCERT Class 12 Biology Textbook (Latest Edition)

  2. Trueman’s Elementary Biology for Class 12

  3. Pradeep’s A Textbook of Biology

  4. S. Chand’s Biology for Class XII

  5. Dinesh New Millennium Biology Class 12

  6. MTG Objective NCERT at Your Fingertips Biology

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0.34\; J

 Option 2)

0.16\; J
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1.00\; J

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0.67\; J
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2.45×10−3 kg

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 6.45×10−3 kg
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 9.89×10−3 kg

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12.89×10−3 kg

 
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2,000 \; J - 5,000\; J

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2\times 10^{5}J-3\times 10^{5}J

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K/2\,

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In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

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6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced
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33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

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67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .
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How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

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0.02

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3.125 × 10-2
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1.25 × 10-2

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2.5 × 10-2
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If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

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increase two fold
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remain unchanged

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twice that in 60 g carbon

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less than 3

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