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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 ?
Hi Saurabh
For the NIOS Class 12 Hindi Question Paper 2025, you can check the Careers360 NIOS question paper page, where subject-wise Class 12 previous-year papers are available. Click on the link given below:
https://school.careers360.com/boards/nios/nios-question-papers
Dear Student,
NIOS October-November examination results are generally declared after the examination process and evaluation are completed. For admission to the next level, your should check the result declaration and the admission schedule of the institution or course you want to join. Exact dates vary by session.
A student who passed Class 12 in 2025 but did not meet the required percentage for NEET can consider improving the qualifying subjects through NIOS. If the student subsequently satisfies all NEET 2027 eligibility requirements, including the required PCB marks and other conditions specified in the 2027 information bulletin, they
Hello Dear Student,
Yes, if you pass Class 12 afresh with 5 subjects through the
National Institute of Open Schooling
(NIOS) in 2027, your official passing year on the new marksheet becomes 2027. This makes you fully eligible for the
IIIT Hyderabad
UGEE 2027 exam
, as IIIT-H accepts passing
Hello Dear Student,
You can find, check and get more information here:
- https://school.careers360.com/boards/nios/nios-admission
- https://school.careers360.com/boards/nios/nios-registration
Hope it helps!
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