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Biology NCERT Changes 2025-2026 What Students NEED To Know

by PW Gulf
May 16, 2025
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Biology NCERT Changes 2025-2026: What Students NEED To Know: The NCERT has introduced some changes to the Biology textbooks for classes 11 and 12, which form the foundation of the NEET Biology syllabus for 2026. These changes focus on correcting inaccuracies in content and diagrams to ensure greater precision and clarity. The chapters of the NCERT Biology 2025-2026 syllabus are similar to those of 2024. 

These revisions aim to enhance conceptual understanding and accuracy for NEET aspirants. To strengthen exam preparation, students must refer to the revised edition of the NCERT Biology textbook.

Biology NCERT Changes 2025-2026 Highlights

NCERT has made certain corrections to the class 11 and class 12 Biology chapters. The following presents key highlights of Biology NCERT changes 2025-2026:

Biology NCERT Changes 2025-2026 Highlights

Chapter

Details

Cell - The Unit of Life

Theodor Schwann's nationality changed to German.

Chemical Coordination and Integration

Adrenal Gland positioning changed to suprarenal gland.

Biotechnology

Grammatical rectifications.

Locomotion and Movement

Hyoid has been excluded from the skull.

Respiration in Plants

2H+ replaced with 4H+ in the diagram of ATP synthesis in mitochondria.

Detailed Biology NCERT Changes 2025-2026

Knowing these changes is crucial for strengthening preparation and increasing accuracy during the board and NEET exams. Presented below is the detailed explanation of changes in the Biology NCERT 2025-2026 textbook:

Theodor Schwann's Nationality Correction

Earlier, the class 11 NCERT Biology textbook incorrectly mentioned Theodor Schwann, the renowned physiologist who co-founded cell theory, as a British national. This has now been rectified, reflecting his actual German nationality.

Adrenal Gland Positioning Update

The latest class 11 NCERT textbook rectifies the positioning of the adrenal gland in the chapter Chemical Coordination and Integration. Previously, it was described as being anterior to the kidneys, which is anatomically inaccurate. The latest edition correctly identifies this gland as suprarenal, emphasising its actual location above the kidneys.

Grammatical Improvements in Biotechnology 

Several minor grammatical errors in the class 12 Biology chapter, Biotechnology, have been addressed. These rectifications don’t affect the conceptual meaning. However, through these minor changes, NCERT aims to ensure more precise and accurate language for explaining scientific concepts.

Exclusion of Hyoid Bone from Skull

In the class 11 Biology chapter “Locomotion and Movement”, the hyoid bone has been excluded from the skull section. This correction presents the accurate human anatomy by explaining that the hyoid is not directly part of the skull but a unique, independent bone supporting the tongue and associated muscles.

Correction in ATP Synthesis Diagram

A critical rectification has been made in the ATP synthesis diagram within the mitochondria section. The earlier edition inaccurately presented 2H+ (hydrogen ions) passing through the F0 subunit of the ATP synthesis for ATP production. The corrected version now accurately shows 4H+ ions, reflecting the correct proton required for ATP synthesis.

Biology NCERT 2025-2026 Syllabus

Here are the chapter candidates must cover in class 11 and 12 NEET 2026 Biology based on the revised NCERT syllabus:

Biology NCERT 2025-2026 

Class

Unit Name

Chapters (Class 11)

11

Diversity of Living Organisms

The Living World

Biological Classification

Plant Kingdom

Animal Kingdom

Structural Organization in Plants and Animals

Morphology of Flowering Plants

Anatomy of Flowering Plants

Structural Organisation in Animals

Cell: Structure and Function

Cell - The Unit of Life

Biomolecules

Cell Cycle and Cell Division

Plant Physiology

Photosynthesis in Higher Plants

Respiration in Plants

Plant Growth and Development

Human Physiology

Breathing and Exchange of Gases

Body Fluids and Circulation

Excretory Products and their Elimination

Locomotion and Movement

Neural Control and Coordination

Chemical Coordination and Integration

12

Reproduction

Sexual Reproduction in Flowering Plants

Human Reproduction

Reproductive Health

Genetics and Evolution

Principles of Inheritance and Variation

Molecular Basis of Inheritance

Evolution

Biology and Human Welfare

Human Health and Disease

Microbes in Human Welfare

Biotechnology and its Applications

Biotechnology - Principles and Processes

Biotechnology and its Applications

Ecology and Environment

Organisms and Populations

Ecosystem

Biodiversity and its Conservation

Biology NCERT Changes 2025-2026 FAQs

Q1. Is NCERT enough for NEET Biology 2026

Ans. NCERT Biology explains all the concepts covered in the NEET syllabus. Students must start their NEET preparation with the NCERT textbook. However, to improve problem-solving skills, it is recommended to use reference books that align with the NCERT syllabus.

Q2. What is the Biology portion of NEET 2026?

Ans. NEET 2025 Biology portion includes all the chapters of class 11 and 12, Zoology and Botany subjects.

Q3. What is the weightage of Zoology in NEET 2026?

Ans. Both Zoology and Botany sections carry equal weightage in the NEET exam.

Q4. How can I access revisions in NEET Biology?

Ans. Candidates can check NEET Biology revisions by referring to the revised edition of NCERT.

Q5. How many chapters are there in NEET Biology 2026?

Ans. NEET Biology 2026 has a total of 32 chapters. This includes 19 chapters in class 11 and 13 chapters in class 12.

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