NIOS 12th Biology Syllabus 2026: Download Chapter List & Topics PDF
The National Institute of Open Schooling (NIOS) has released the bifurcated NIOS Class 12 Biology syllabus 2026 for Senior Secondary students. The NIOS 12th Biology syllabus 2026 is divided into Tutor-Marked Assignments (TMA - 40%) and the Public Examination syllabus (60%).
This Story also Contains
- Download NIOS Class 12 Biology Syllabus 2026 PDF (Bifurcated)
- NIOS Class 12 Biology Syllabus 2026: Topics and Marks Weightage
- Steps to Download the NIOS 12th Biology Syllabus PDF Online
- Tips to Prepare for NIOS Class 12 Biology Paper 2026
The Biology syllabus for NIOS Class 12 consists of 31 lessons, organised across five modules, with a clear distribution of topics between internal assessment and the final public exam. The NIOS 12th Biology syllabus remains the same for both NIOS Public exams and On-Demand examinations. Students can download the official NIOS 12th Bio syllabus PDF from nios.ac.in and refer to the article below to get the direct download link.
Download NIOS Class 12 Biology Syllabus 2026 PDF (Bifurcated)
Students appearing for NIOS 12th exams can directly download the NIOS Class 12 Biology syllabus PDF from the table below:
Particulars | Download PDF |
|---|---|
NIOS Class 12 Biology Syllabus 2026 |
NIOS Class 12 Biology Syllabus 2026: Topics and Marks Weightage
The NIOS Class 12 Biology syllabus 2026 consists of 31 lessons divided across five modules, with a clear bifurcation between Tutor-Marked Assignments (40%) and the Public Examination (60%). The module-wise syllabus, along with lesson distribution, is given below, as per the structure mentioned on the official website.
| Module (No. & Name) | TMA (40%) | Public Examination (60%) |
|---|---|---|
Module I: Diversity and Evolution of Life (12 Marks) |
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Module II: Forms and Functions of Plants and Animals (26 Marks) |
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Module III: Reproduction and Heredity (22 Marks) |
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Module IV: Environment and Health (13 Marks) |
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Module V: Emerging Areas in Biology (7 Marks) | - |
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Also, Check:
Steps to Download the NIOS 12th Biology Syllabus PDF Online
The NIOS 12th Bio syllabus PDF is available at the official website. Students can download the NIOS Class 12 Biology syllabus 2026 PDF by following the steps given below:
Visit the official website- nios.ac.in.
Click on the ‘Learners Corner’ section.
Select “Study Material” from the dropdown.
Choose ‘Senior Secondary Courses’.
Click on Biology (314).
Select ‘Syllabus Bifurcation of Biology (314)'.
The Class 12 Biology syllabus NIOS PDF will open on the screen; download and save it for reference.
Image of NIOS 12th Question Paper Design
Tips to Prepare for NIOS Class 12 Biology Paper 2026
Preparing for the NIOS 12th Biology exam 2026 requires a balanced focus on both TMA submissions and the public examination syllabus. Some useful preparation tips are mentioned below:
Start by carefully going through the bifurcated syllabus and clearly separating TMA topics from public exam chapters. This helps in effective planning.
Modules like Forms and Functions of Plants and Animals, and Reproduction and Heredity carry higher weightage and should be prioritised.
Since TMAs contribute 40% of the final score, ensure timely completion and submission of assignments.
Practice diagrams regularly, especially on topics like tissues, photosynthesis, genetics, and human physiology.
Solve previous years’ NIOS Biology question papers to understand question trends and marking schemes.
Revise concepts frequently and prepare short notes, flowcharts, and labelled diagrams for faster revision.
NIOS Class 12th Syllabus
Download the NIOS Class 12th syllabus for 2025-26, covering all subjects and topics to help students plan their studies and excel in board exams.
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Questions related to NIOS Class 12
On Question asked by student community
Have a question related to NIOS Class 12 ?
Hello,
The NIOS October session theory admit card for both Class 10 and 12 is expected to be released in October 2025. You can download it from the official NIOS website, https://sdmis.nios.ac.in/, (https://sdmis.nios.ac.in/) by entering your enrollment number and selecting the hall ticket type.
I hope it will clear your
Hi dear candidate,
You can find the NIOS class 12th Business Studies and home science question papers on our official website that you can download.
Kindly refer to the links attached below:
NIOS Question Papers 2025-26: Download 10th, 12th Previous Year Paper Here
Hey Sapna:)
Thanks for reaching out!
Yes, NIOS offers physical classes called personal contact program(PCP) at its study centre across india. These classes are meant to help students of both class 10th and 12th by providing doubt clarification, practical demonstration and guidance.These sessions are usually held on weekends or holidays,
According to the eligibility criteria for JEE Advanced, the candidates must have appeared in Class 12th and scored 75% aggregate marks. For the first time, you appeared in the CBSE Class 12 board exam in 2024, and in 2025, you appeared in the 12th examination from the NIOS board and
Yes, you can definitely appear for the 12th again through NIOS with PCM subjects.
This will make you eligible for JEE exams.
However, your previous PCMB degree will still hold validity. It won't be replaced or affected by the new NIOS certificate. You'll essentially have two 12th certificates.
Important Considerations:
Applications for Admissions are open.
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