NSEB 2025-26: The National Standard Examination in Biology (NSEB) is a competitive examination for higher secondary school students in India, primarily aimed at those in Classes 11 and 12. It serves as the first stage in the selection process for the International Biology Olympiad (IBO).
The NSEB is organized by the Association of Teachers in Biological Sciences in collaboration with the Indian Association of Physics Teachers (IAPT) and the Homi Bhabha Centre for Science Education (HBCSE). For the Academic Year 2025-26, the NSEB registration process will be initiated from 21st August 2025 and the NSEB 2025-26 to be organized on 23rd November 2025 between 2.30 pm to 4.30 pm.
Check: How to Prepare for NSEB?
NSEB 2025-26 Overview | |
Organization | IAPT (Indian Association of Physics Teachers) in collaboration with HBCSE (Homi Bhabha Centre for Science Education), |
Exam Name | National Standard Examination in Biology (NSEB) 2025 |
NSEB Registration 2025-26 | 21st August to 14th September 2025 |
NSEB 2025-26 Exam Date | 23rd November 2025 |
Application Mode | Online |
Types of Questions | Multiple Choice Questions (MCQs) - 60 Questions |
Total Marks | 216 |
Negative Marking | For each wrong response, one mark will be deducted. |
Official Website | https://www.iapt.org.in/ |
The NSEB 2025-26 Registration Process will be started by the officials for candidates from 21st August 2025 and the deadline for online registration is 14th September 2025. So, complete your registration process at the earliest to appear for the NSEB 2025-26 to be held on 23rd November 2025 (between 2.30 pm to 4.30 pm).
The NSEB 2025-26 Important Dates are tabulated below.
NSEB 2025-26 Important Dates | |
Centre registration start date |
1st August 2025 |
Last date for NSEB 2025-26 Center registration date |
20th August 2025 |
NSEB 2025-26 Student enrolment start date |
21st August 2025 |
NSEB 2025-26 Student enrolment end date |
14th September 2025 |
NSEB Exam Date 2025-26 |
23rd November 2025 (2.30 pm to 4.30 pm) |
NSEB Exam is for Indian students who have a keen interest in chemistry and have excelled in biology. Students at the higher secondary level take this exam and around 850 centres are allocated by the organizing committee in various cities and towns to facilitate the examination process. Students must satisfy the eligibility criteria mentioned below:
The IAPT (Indian Association of Physics Teachers) will start the NSEB Registration Process 2025-26 in August 2025 and the NSEB Registration link will be made available at iapt.org.en. The candidates can apply and pay the fees via the IAPT website after verifying their eligibility. The NSEB 2025 Online Application must be submitted with all necessary paperwork. It is advisable to fill complete the NSEB Registration before the deadline to avoid any kind of glitches.
NSEB Exam Pattern 2025-26 | |
Duration of Exam | Two hours |
Test Paper Level/ Syllabus | Is broadly equivalent to senior secondary level (up to and including Class XII) of CBSE India |
Test Medium/ Language | Question paper will be in English & Hindi (Option during registration). Type of questions – Objective type with multiple choices |
Sections | Two parts |
Total Number of Questions | 60 MCQs |
Total Marks | 216 Marks |
NSEB Syllabus 2025-26 | |
Chapters | Topics Included |
Diversity Of Living |
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Structural Organization in Animals and Plants |
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Cell: Structure and Function |
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Plant Physiology |
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Human Physiology |
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Reproduction In Organisms |
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Sexual Reproduction in Flowering Plants |
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Human Reproduction |
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Reproductive Health |
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Principles Of Inheritance And Variation |
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Molecular Basis of Inheritance |
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Evolution |
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Human Health And Diseases |
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Strategies for Enhancement in Food Production |
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Microbes in Human Welfare |
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Biotechnology – Principles and Processes |
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Biotechnology and Its Applications |
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Organisms and Populations |
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Ecosystem |
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Biodiversity and Its Conservation |
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Environmental Issues |
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