Bihar Board 12th Biology Deleted Syllabus 2026: Check Chapter Wise Deleted Syllabus
Table of Contents
The Bihar Board 12th Biology Deleted Syllabus has been published, and its PDF will be available on the official website soon. Students must download the PDF and refer to it while studying Biology. The Bihar Board has taken this step to prevent students from studying unnecessary and outdated topics that are no longer relevant to the syllabus.
In the Bihar Board 12th Biology Deleted Syllabus, certain topics have been deleted from all the chapters. The students now have time to focus on important topics and practice diagram-based questions. They can strategize their exam preparation better as per Bihar Board 12th Deleted Syllabus 2026.
Students appearing for the Bihar Board 12th exam must also refer to the updated syllabus also as it will contain the list of topics that are in the syllabus. The questions in the Biology exam will be asked from the updated syllabus and not from the deleted syllabus. Students who have any confusion related to the syllabus must contact their respective school teachers for guidance. Even after the deletion of certain topics, students can practice the questions from the previous year's question paper. They can skip the questions that were asked about the deleted topics from Bihar board 12th syllabus. The Bihar Board 12th Biology question paper pattern has not been changed after some topics have been removed. The paper pattern and practical exam will be conducted in the same way as it was conducted before, keeping the updated syllabus in focus.
This article talks about the Bihar Board 12th Biology Deleted Syllabus, updated syllabus, weightage of each topic, and benefits of the deleted syllabus of Biology.
Bihar Board 12th Biology Deleted Syllabus 2026- Chapter Wise
The Bihar Board 12th Biology Deleted Syllabus is yet to be uploaded on the official website of the Bihar Board. Candidates can check the deleted topics for each unit from the table below once the officially published deleted syllabus is available.
|
Units |
Deleted Topics |
|
Unit 1: Sexual Reproduction |
TBU |
|
Unit 2: Genetics and Evolution |
TBU |
|
Unit 3: Biology and Human Welfare |
TBU |
|
Unit 4: Biotechnology and its application |
TBU |
|
Unit 5: Ecology and Environment |
TBU |
Also Read: Bihar Board 12th Admit Card
Bihar Board 12th Biology Syllabus 2026 PDF
After the Bihar Board 12th Biology Deleted Syllabus is released, the board will publish the updated syllabus of Biology also on their official website. Students can check the PDF attached below for the updated syllabus.
Also Read: Bihar Board 12th Sample Papers
Bihar Board 12th Biology Question Paper Pattern 2026
Bihar Board 12th Biology Question Paper Pattern 2026 consists of MCQs, Short-Answer, and Long-Answer questions. The question paper pattern is the same as it was before the Bihar Board 12th Biology Deleted Syllabus. The theory exam is conducted for a total of 70 marks, and the practical exam for 30 marks. Each theory and practical exam has separate and combined passing marks that students must score to be declared as pass in the Biology subject.
Below is a table that represents the total questions, questions to be attempted, the marks per question, and the total marks. Students must check this distribution.
|
Question Type |
Total Questions |
Questions to be attempted |
Marks per Question |
Total Marks |
|
Multiple-Choice Questions |
35 |
35 |
1 |
35 |
|
Short-Answer Questions |
20 |
10 |
2 |
20 |
|
Long-Answer Questions |
6 |
3 |
5 |
15 |
|
Total (Theory) |
- |
- |
- |
70 |
|
Practical Exam |
- |
- |
- |
30 |
Also Read: Bihar Board 12th Previous Year Question Papers
Bihar Board 12th Biology Topics Weightage 2026
The Bihar Board 12th Biology Topics Weightage 2026, as per the units and subunits, are mentioned in the table below. Candidates can check from which unit, how many marks of questions are asked in the Biology exam.
|
Units |
Subunits |
Marks Distribution |
|
Sexual Reproduction |
Plant and human reproductive biology |
6 marks |
|
Genetics and Evolution |
Mendelian principles, modern genetics, human heredity, etc |
18 marks |
|
Biology and Human Welfare |
Includes applications in health, hygiene, microbial biotech, and disease control |
18 marks |
|
Biotechnology and Its Application |
Recombinant DNA, industrial biotechnology, and biosafety |
18 marks |
|
Ecology and Environment |
Ecosystems, cycles, biodiversity, and environmental issues |
10 marks |
Also Read: Bihar Board 12th Exam Pattern
Benefits of Bihar Board 12th Biology Deleted Syllabus 2026
There are various benefits of Bihar Board 12th Biology Deleted Syllabus 2026 that students may get if they structure their Biology exam preparation according to the updated syllabus. Below are some benefits that students should check.
- The Bihar Board 12th Biology Deleted Syllabus will help students focus on important topics that are asked every year in the exam.
- Students can clear their concepts of topics in which they are weak.
- The biology subject requires practicing image-based questions, so students now have to practice such questions stress-free.
- Students can solve previous year questions on the topics that are included in the syllabus.
- They can do more answer writing practice as the syllabus is reduced, which will help them in scoring good marks in the final exams.
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