The Central Board of Secondary Education (CBSE) has released the revised Class 12 Biology syllabus for the 2025-26 academic session. In line with the National Education Policy (NEP) 2020, the syllabus has been reduced by 30% to ease the academic load on students. Several chapters and topics from the NCERT textbook of CBSE Class 12 have been removed, while practicals have also been trimmed to help students focus better on core concepts. The updated syllabus is available for download on the official CBSE website: cbseacademic.nic.in.
Overview of Deleted Topics in CBSE Class 12 Biology Syllabus 2025-26
Here is the complete list of chapters and topics that have been removed from the syllabus to help students understand which areas no longer require detailed study.
Deleted Practical Topics in CBSE Class 12 Biology
Practical exams also carry significant marks, so knowing the removed experiments is essential. Below is the list of practical activities that students no longer need to perform.
A. Deleted Experiments
B. Deleted Spotting Exercises
Check: CBSE Class 12 Syllabus
CBSE Class 12 Biology Marking Scheme (Theory)
Understanding how marks are distributed across units will help you strategize your preparation. Below is the detailed marking scheme for the theory portion of the exam.
CBSE Class 12 Biology Question Paper Pattern
Familiarity with the structure of the question paper helps in time management and prioritizing important question types. The table below outlines how questions are distributed in the exam.
Conclusion
The syllabus reduction in CBSE Class 12 Biology for the 2025-26 academic session is a student-friendly initiative aimed at focusing on essential topics while reducing unnecessary academic pressure. With a clear syllabus and defined marking scheme, students can strategically plan their studies and prioritize important concepts. It is important to refer to the official syllabus and study materials while practicing previous years’ question papers to build confidence and enhance performance. Staying organized and following a structured preparation plan will help students excel in the board exams.
