NCERT Biology books for 2025-2026 have undergone various essential updates and changes. Some significant updates include changing Theodor Schwann's nationality from Dutch to German, changing the phrasing of a section about adrenal (suprarenal) glands to indicate that it would be located above the kidneys instead of referring to it as the adrenal or suprarenal gland, and the exclusion of the hyoid (floating) bone from the skull section.
Additionally, diagrams illustrating ATP synthesis in mitochondria now show the correct number of 4 hydrogen ions passing through the ATP synthase enzyme, rather than 2. The minor grammatical errors in the chapters related to Biotechnology were displayed and resolved for an overall message of clarity. Collectively, these changes improve the accuracy of the content as well as construct better conceptual understanding for students preparing for the Board Format and NEET exams, with all the updates based on the latest syllabus and editions of the NCERT textbooks.
Biology NCERT Changes 2025 - 2026 Overview
NCERT Biology textbooks for Class 11 have undergone important changes for the academic year 2025-2026. These revisions aim to correct inaccuracies and improve conceptual clarity to better equip students preparing for board exams and NEET 2026. The chapters remain mostly the same, but key corrections in content and diagrams have been made to reflect precise scientific facts. Students should refer to the updated edition of the Class 11 Biology NCERT book to align their studies with the latest syllabus and improve exam readiness.
Key Biology NCERT Changes 2025-2026
Some of the major changes in the Class 11 Biology NCERT book are:
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The Nationality of Theodor Schwann was corrected to German in the Cell Theory chapter.
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The Position of the Adrenal Gland in the Chemical Coordination and Integration chapter was changed to suprarenal gland, as it is above the kidneys.
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The description of the skull in the Locomotion and Movement chapter was excluded of the hyoid bone.
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Corrections against ATP synthase diagrams were made so that diagrams would show that 4H+ ions instead of 2H+ ions were passing through mitochondria.
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Grammatical corrections that improved the precision of the language were made in the Biotechnology chapter.
Class 11 Biology Chapters and Syllabus Overview
The Class 11 syllabus continues to cover essential units, including Diversity of Living Organisms, Structural Organization, Cell Biology, Plant Physiology, and Human Physiology. There are about 19 main chapters now, following some content rationalization, which means fewer chapters than before but better focus on core topics. Some internal content and examples have also been updated or removed for better clarity. Students should use the NCERT Class 11 Biology PDF download of the latest edition for full syllabus coverage.
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Biology NCERT 2025-2026 |
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Class |
Unit Name |
Chapters (Class 11) |
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11 |
Diversity of Living Organisms |
The Living World |
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Biological Classification |
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Plant Kingdom |
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Animal Kingdom |
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Structural Organization in Plants and Animals |
Morphology of Flowering Plants |
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Anatomy of Flowering Plants |
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Structural Organisation in Animals |
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Cell: Structure and Function |
Cell - The Unit of Life |
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Biomolecules |
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Cell Cycle and Cell Division |
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Plant Physiology |
Photosynthesis in Higher Plants |
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Respiration in Plants |
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Plant Growth and Development |
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Human Physiology |
Breathing and Exchange of Gases |
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Body Fluids and Circulation |
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Excretory Products and their Elimination |
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Locomotion and Movement |
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Neural Control and Coordination |
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Chemical Coordination and Integration |
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12 |
Reproduction |
Sexual Reproduction in Flowering Plants |
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Human Reproduction |
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Reproductive Health |
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Genetics and Evolution |
Principles of Inheritance and Variation |
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Molecular Basis of Inheritance |
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Evolution |
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Biology and Human Welfare |
Human Health and Disease |
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Microbes in Human Welfare |
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Biotechnology and its Applications |
Biotechnology - Principles and Processes |
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Biotechnology and its Applications |
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Ecology and Environment |
Organisms and Populations |
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Ecosystem |
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Biodiversity and its Conservation |
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Benefits of Using Revised NCERT Class 11 Biology Textbooks
Correct and revised scientific information, along with updated science information, offers a better understanding.
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The chapter-by-chapter format with summaries and exercises provides an effective resource for self-study.
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Corrected Class 11 Biology with updated Biology Class 11 study material for CBSE Class 11 Biology syllabus and NEET preparation Class 11.
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There are NCERT Biology English PDF and NCERT Biology Hindi PDF available in the respective languages, satisfying every learner.
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The book consists of important Class 11 Biology diagrams that could be beneficial for the exam.
How to Make the Most of the New NCERT Biology Book
Students aiming to excel should download the Free download Class 11 Biology updated NCERT textbooks and refer chapter-wise Biology Class 11 content for thorough revision. Combining textbook study with Class 11 Biology solutions and NCERT exercises, Class 11 Biology is recommended for practice. Since the NCERT textbook for NEET is foundational, following these changes ensures preparation is on the right path for competitive exams.
Biology NCERT Changes 2025 - 2026 FAQs
Q1: Where can I find the revised NCERT Class 11 Biology PDF download for 2025-26?
Ans: The revised NCERT Class 11 Biology PDF is hosted on NCERT's official websites, which have been providing PDFs in English as well as Hindi of each chapter free of cost to aid students in their preparation.
Q2: Have there been significant changes in the Class 11 Biology chapters for 2025-26?
Ans: The major changes consist of correcting scientific facts such as the location of adrenal glands, the removal of the hyoid bone from the skull, changing the ATP synthesis diagram, refining content in biotechnology, and reducing the count from 22 to 19 chapters.
Q3: Is the revised NCERT Biology book enough for NEET preparation Class 11?
Ans: Yes, the revised NCERT book forms the core study material for NEET preparation for Class 11. It covers all essential concepts and updated diagrams essential for the exam.
Q4: What key chapters should Class 11 students focus on after NCERT changes?
Ans: Important chapters include Plant and animal kingdom Class 11, Human physiology Class 11, Chemical Coordination and Integration, and Cell - The Unit of Life, which form the foundation for NEET and board exams.
