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NIOS Class 12 Biology Syllabus 2025 PDF: Chapter List & Topics (Complete List)
The National Institute of Open Schooling has released the bifurcated NIOS Class 12 Biology syllabus 2025, dividing it into Tutor-Marked Assignments (TMA-40%) and Public Examination syllabus (60%). This bifurcation is aimed at helping students manage their studies systematically and focus on both internal and external evaluations.
This Story also Contains
- NIOS Class 12 Biology Syllabus 2025 - Topics and Marks Weightage
- NIOS 12th Biology Syllabus 2025 - Difference between TMA and Public Examination Syllabus
- How Can I Download the NIOS 12th Biology Syllabus PDF Online?
The official PDF of the NIOS Class 12 Biology bifurcated syllabus 2025 is available online at nios.ac.in. The syllabus remains the same for both NIOS 12th public examination and on-demand exams. The NIOS will conduct the Class 12 Biology theory exams for the October session in October/November 2025. Read further to get the direct download link of the Biology syllabus NIOS Class 12 and other details.
Download NIOS Class 12 Biology Syllabus 2025 PDF (Bifurcated)
Particulars | Download PDF |
NIOS Class 12 Biology Syllabus 2025 |
NIOS Class 12 Biology Syllabus 2025 - Topics and Marks Weightage
Students who are going to appear in the NIOS 12th exams must get well-versed with the syllabus. The NIOS 12th Biology syllabus PDF covers a total of 31 lessons, divided across five modules. In the following table, students can go through the details of the bifurcated syllabus:
NIOS Class 12 Biology Syllabus 2025
Module (No. & Name) | Marks | 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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NIOS 12th Biology Syllabus 2025 - Difference between TMA and Public Examination Syllabus
The NIOS Class 12 syllabus of Biology is carefully structured to balance theoretical concepts with practical relevance. It is divided into TMA and Public Examination, which means:
Tutor-Marked Assignments (40%) - TMAs are an essential part of the NIOS learning process, contributing to internal assessment. These include selected lessons from each module to be completed and submitted by students or learners.
Public Examination (60%) - Covers major lessons for the final board examination.
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How Can I Download the NIOS 12th Biology Syllabus PDF Online?
Students can download the NIOS 12th Biology 2025 syllabus PDF online through the official website. They can follow the steps given below to download the same:
Go to the website, nios.ac.in.
Go to the ‘Learners Corner’ tab. Click on ‘Study Material’.
Click on the option of ‘Senior Secondary Courses’.
Next, click on the ‘Biology(314) option’.
Then, click on ‘Syllabus Bifurcation of Biology (314)’. The NIOS 12th Biology PDF will open on the screen.
Download the PDF of the NIOS 12th Biology syllabus and prepare for the exams accordingly.
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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 Dear Student,
You can check the NIOS Class 12 Chemistry Syllabus 2026 from the link below:
https://school.careers360.com/boards/nios/nios-class-12-chemistry-syllabus-2026
Best wishes for your studies!
Dear Prakruthi,
By taking the NIOS exam to pass Mathematics at the 12th grade level, you can fulfill the mandatory eligibility requirement for a BSc in Statistics at most universities.
Please check the detailed information here:
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,
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