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

Edited By Irshad Anwar | Updated on Jul 22, 2025 02:21 PM IST

The NCERT Books for Class 12 Biology will help students explore amazing facts in a simple and easy-to-read manner. This book include clear diagrams, real-life examples that build a strong understanding. Chapters related to genetics, ecology, human physiology, and more are included. Several questions in board examinations and competitive exams, such as NEET, directly come from this textbook, which makes it useful for exam preparations. The Class 12 students can trust these NCERT books to make biology easier to learn.

This Story also Contains

NCERT Biology Book Class 12 Chapters List
How to Download the NCERT Textbook Class 12 Biology 2025-26?
Biology Class 12 Syllabus and Marking Scheme
Class 12 NCERT Biology Book Chapters and Study Tips
Best NCERT Biology Class 12 Reference Books

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

These books follow the NCERT Class 12 syllabus closely, with chapters arranged in the right sequence so students don’t miss any important topic. Practice exercises with questions and summaries help students check their knowledge. These features support strong preparation and better retention of concepts. Students can easily download the free NCERT book for Class 12 Biology PDF and start learning at their own pace.

NCERT Biology Book Class 12 Chapters List

The name of the book is Biology in English and Jeev Vigyan in Hindi. The Class 12 NCERT Biology book is a trusted resource for board and competitive exams. These books are available in both print and digital forms. Chapter-wise links to the book are given below:

Chapter no.	English Medium	Hindi Medium
Chapter 1	Sexual Reproduction in Flowering Plants	पुष्पी पादपों में लैंगिक प्रजनन
Chapter 2	Human Reproduction	मानव जनन
Chapter 3	Reproductive Health	जन स्वास्थ्य
Chapter 4	Principles of Inheritance And Variation	वंशागति तथा विविधता के सिद्धांत
Chapter 5	Molecular Basis of Inheritance	वंशागति के आणविक आधार
Chapter 6	Evolution	विकास
Chapter 7	Human Health and Disease	मानव स्वास्थ्य तथा रोग
Chapter 8	Microbes in Human Welfare	मानव कल्याण में सूक्ष्मजीव
Chapter 9	Biotechnology Principles and Processes	जैव प्रौद्योगिकी- सिद्धांत व प्रक्रम
Chapter 10	Biotechnology and its Applications	जैव प्रौद्योगिकी एवं उसके उपयोग
Chapter 11	Organisms And Population	जीव और समष्टियाँ
Chapter 12	Ecosystem	पारितंत्र
Chapter 13	Biodiversity and Conservation	जैव-विविधता एवं संरक्षण

How to Download the NCERT Textbook Class 12 Biology 2025-26?

Students can also download the book to prepare comfortably for the exam. Check the given steps to download the books online for free:

Visit the official website of NCERT, ncert.nic.in
In the section of links, click on ‘Textbook’, then click on 'Ebooks'.
Now, click on ‘PDF (I-XII)’
Select the respective class, subject, and book.
Click on ‘Go.’
Class 12 Biology Book 2025-26 will be displayed on the screen.
Students can also download the NCERT Biology Book Class 12 in the PDF format from the link given below.

Download: NCERT Book for Class 12 Biology PDF

Biology Class 12 Syllabus and Marking Scheme

Biology is an interesting subject that helps us understand the wonders of life and the environment around us. Understanding the marking scheme helps them to stay organised and prepare well for the exams. By this, students can give priority to those chapters which contain high weightage included in the NCERT textbook Class 12 Biology.

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

Also read -

NEET Highest Scoring Chapters & Topics

Most Scoring concepts For NEET (Based On Previous Year Analysis)

Download EBook

Class 12 NCERT Biology Book Chapters and Study Tips

The biology book consists of 13 chapters, which are divided into five major units. Each units deal with various topics of biological sciences. Below is a brief description of these units, their chapters, and how students can study these chapters from the Class 12 Biology Book 2025-26 to score well in the exam.

Unit VI: Reproduction

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

Unit VII: Genetics and Evolution

Mix theoretical study with diagrams, particularly for concepts such as DNA replication, transcription, and evolutionary relationships. Making short notes from NCERT Books for Class 12 reduces the time while doing revision.

Unit VIII: Biology and Human Welfare

Mark important points from Class 12 NCERT Biology book 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

Focus on understanding the concepts and procedures of biotechnology by using the NCERT book for Class 12 Biology PDF. Making notes, which may be useful in understanding applications and ethical aspects.

Unit X: Ecology and Environment

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

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 board exam preparation and competitive exams like NEET. Studying from these books along with the Knowledge of the weightage of every unit can help in doing the preparation effectively.

NCERT Class 12 Biology Textbook (Latest Edition)
Trueman’s Elementary Biology for Class 12
Pradeep’s A Textbook of Biology
S. Chand’s Biology for Class XII
Dinesh New Millennium Biology Class 12
MTG Objective NCERT at Your Fingertips Biology

Also Check,

Frequently Asked Questions (FAQs)

1. What is included in the NCERT book for class 12 Biology?

The NCERT Books for Class 12 Biology include 13 chapters, which are divided into 5 units. The names of units are given below:

Reproduction
Genetics and Evolution
Biology and Human Welfare
Biotechnology and Its Applications
Ecology and Environment

2. Is NCERT sufficient for class 12 Biology?

Yes, NCERT Books for Class 12 Biology are sufficient for board exams and NEET preparation. They cover all important topics in simple language. Most exam questions come directly from NCERT. So, preparing from these books will help a lot.

3. Is class 12 Biology difficult?

Yes, Class 12 Biology can be a little bit difficult for some students. But NCERT Books for Class 12 Biology explain the concepts in a simple and clear way. Doing regular practice and consistent revision makes the difficult concepts easy.

4. Which is the most difficult chapter in Class 12 Biology?

Many students find the "Molecular Basis of Inheritance" chapter a bit challenging from the Class 12 Biology Book. This chapter includes complex concepts like DNA replication, genetic code, and gene expression.

5. Which is the easiest chapter in class 12 biology?

The easiest chapter in NCERT Books for Class 12 Biology is usually "Reproduction in Organisms." Students can understand this chapter easily with the help of simple and clear explanations.

Also Read

NCERT Books for Class 12 - Download All Subjects PDFs Here

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

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

NCERT Book Class 12 Maths 2025-26 PDF Free Download

NCERT Books for Class 12 Hindi 2025-26; Download Chapter Wise PDF here

NCERT Book Class 12 Physics 2025-26 FREE PDF Download

NCERT Syllabus 2025-26 for Class 6-12 - Download All Subjects PDF Free

NCERT Syllabus for Class 12, Download All Subjects Free PDF

NCERT Class 12 Maths Notes - Download Chapter wise Free PDFs

Kinetic Theory Class 11th Notes - Free NCERT Class 11 Physics Chapter 13 Notes - Download PDF

NCERT Class 12 Physics Chapter 3 Notes, Current Electricity Class 12 Chapter 3 Notes

NCERT Class 12 Physics Chapter 1 Notes Electric Charges and Fields

Linear Programming Class 12th Notes - Free NCERT Class 12 Maths Chapter 12 Notes - Download PDF

Probability Class 12th Notes - Free NCERT Class 12 Maths Chapter 13 Notes - Download PDF

NCERT Exemplar Class 12 Physics Solutions Chapter 8 Electromagnetic Waves

NCERT Solutions for Class 12 Physics Chapter 7 - Alternating Current

NCERT Solutions for Class 12 Maths Chapter 11 Three Dimensional Geometry

NCERT Solutions for Miscellaneous Exercise Chapter 7 Class 12 - Integrals

NCERT Solutions for Exercise 4.1 Class 11 Maths Chapter 4 - Principle of Mathematical Induction

Articles

CGBSE 12th Question Papers 2025-26 - Download CG Board Previous Year Question Papers PDF

Jul 24, 2025

Maharashtra HSC Question Papers 2025 PDF: Download 12th Previous Year Question Bank

Jul 24, 2025

NCERT Exemplar Class 12 Chemistry Chapter 3 Electrochemistry

Jul 24, 2025

TN HSE(+2) Supplementary Results 2025 Date, Check Tamil Nadu 12th Re-exam Result @ dge.tn.gov.in

Jul 24, 2025

Tamil Nadu 12th Supplementary Results 2025 Link at tnresults.nic.in; Check Scorecard Here

Jul 24, 2025

NCERT Exemplar Class 12 Chemistry Solutions Chapter 2 Solutions

Jul 24, 2025

Upcoming School Exams

Bihar Open Board 10th Examination

Late Fee Application Date:01 July,2025 - 25 July,2025

Result

Admit Card

Bihar Open Board 12th Examination

Late Fee Application Date:01 July,2025 - 25 July,2025

Result

Admit Card

Himachal Pradesh Board of Secondary Education 10th Examination

Exam Date:22 July,2025 - 29 July,2025

Mock Test

Result

Admit Card

Himachal Pradesh Board of Secondary Education 12th Examination

Exam Date:22 July,2025 - 28 July,2025

Admit Card

Exam Pattern

Result

National Means Cum-Merit Scholarship

Application Date:25 July,2025 - 30 September,2025

Answer Key

Cutoff

Result

View All School Exams

Popular Questions

A block of mass 0.50 kg is moving with a speed of 2.00 ms^-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1) $0.34\; J$	Option 2) $0.16\; J$
Option 3) $1.00\; J$	Option 4) $0.67\; J$

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up ? Fat supplies 3.8×10⁷J of energy per kg which is converted to mechanical energy with a 20% efficiency rate. Take g = 9.8 ms⁻² :

Option 1)

2.45×10⁻³ kg

Option 2)

6.45×10⁻³ kg

Option 3)

9.89×10⁻³ kg

Option 4)

12.89×10⁻³ kg

An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1) $2,000 \; J - 5,000\; J$	Option 2) $200 \, \, J - 500 \, \, J$
Option 3) $2\times 10^{5}J-3\times 10^{5}J$	Option 4) $20,000 \, \, J - 50,000 \, \, J$

A particle is projected at 60⁰ to the horizontal with a kinetic energy $K$ . The kinetic energy at the highest point

Option 1) $K/2\,$	Option 2) $\; K\;$
Option 3) $zero\;$	Option 4) $K/4$

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	Option 2) $6L\, HCl_{(aq)}$ is consumed for ever $3L\, H_{2(g)}$ produced
Option 3) $33.6 L\, H_{2(g)}$ is produced regardless of temperature and pressure for every mole Al that reacts	Option 4) $67.2\, L\, H_{2(g)}$ at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, $Mg_{3}(PO_{4})_{2}$ will contain 0.25 mole of oxygen atoms?

Option 1) 0.02	Option 2) 3.125 × 10^-2
Option 3) 1.25 × 10^-2	Option 4) 2.5 × 10^-2

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	Option 2) increase two fold
Option 3) remain unchanged	Option 4) be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1) Molality	Option 2) Weight fraction of solute
Option 3) Fraction of solute present in water	Option 4) Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol^-1) is

Option 1) twice that in 60 g carbon	Option 2) 6.023 × 10²²
Option 3) half that in 8 g He	Option 4) 558.5 × 6.023 × 10²³

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t²) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m² , the number of rotations made by the pulley before its direction of motion if reversed, is