INBO (Indian Biology Olympiad)

The INBO (Indian National Biology Olympiad) is a competition for students in classes 11 and 12. It is a national level test and the second stage of the Homi Bhabha Centre For Science Education’s Biology Olympiad Program (HBCSE). It is held at over 15 locations across India, and attracts a significant number of students each year.

Please Note: This page will be updated soon

Before enrolling for the test, students should review the INBO Eligibility Criteria and INBO Exam Pattern. This page also contains information on the various stages of the INBO 2022

Criteria for INBO Eligibility

Candidates studying for the INBO 2022 Exam must meet the following  qualifying requirements:

  • The candidate must pass the National Standard Examination For Biology, Stage 1 of the Biology Olympiad Program (NSEB).
  • The candidate must meet the requirements for an Indian passport.
  • They must be Indian nationals and must be pursuing their studies in India.
  • INBO is only open to students in their last year of high school. However, students in grades 10 and 11 who have passed the NSEB test are eligible to apply.
  • If they apply for the National Standard Examination In Junior Science (NSEJS) in the same year, they will not be deemed eligible.
  • Additionally, any student who is an overseas citizen of India (OCI) would not be selected for the Biology Olympiad Program.

How to Register for the INBO Exam

We’ve outlined some of the steps that applicants need to take to enrol themselves. The procedure is as follows:

  • is the official website.
  • Select the Olympiad option from the drop-down menu.
  • To view a list of upcoming events, click on the link.
  • To enrol in INO, provide the NSE centre code, roll number, and DOB.
  • At the time of registration, you can select an examination centre.

INBO Exam Syllabus and Exam Pattern

The NSEB and INBO syllabus is almost equal to the CBSE board’s senior secondary level (until class XII) for the first and second stages. The syllabus for the third stage is the same as that of the International Olympiad. Because of the continuing pandemic in the country, the organising organisation, HBCSE, has chosen to consolidate the phases of the Biology Olympiad Program, and hold the NSEB and INBO exams as a single test. This will be a 3-hour test with two parts: Part 1 (National Standard Examination For Biology) and Part 2: INBO

INBO syllabus is similar to the NSEB syllabus and covers the following topics:

  • Plant Physiology and Animal Physiology
  • Anatomy of plants and animals
  • Cell Biology – Structure and function of cells
  • Microbiology
  • Biotechnology
  • Protein Synthesis and Transportation
  • Cell Division – Mitosis and Meiosis
  • Reproduction In Organisms
  • Principles of Inheritance and Variation
  • Organisms and Populations
  • Ecosystem
  • Biodiversity, and its Conservation and Environmental Issues

Read: INBO Exam Pattern

INBO Result

After taking the test, many students are eager to learn the results. All candidates who took the test may get their INBO Exam Result through the HBCSE’s official website, Candidates must fill out certain information before viewing their results.

Frequently Asked Questions on INBO – Indian Biology Olympiad (INBO)


Are IBO and INBO the same thing?

No, INBO stands for Indian National Biology Olympiad, whereas IBO stands for International Biology Olympiad. The Indian National Biology Olympiad (INBO) is the second stage of the Biology Olympiad Program, which is held to select candidates for the International Biology Olympiad (IBO). Candidates who do not pass the INBO test are not eligible to take the IBO exam.

Who is qualified to take the INBO Exam?

To qualify for the INBO test, you must have a qualifying score on the NSEB, which is the first level of the Biology Olympiad Program (National Standard Examination In Biology).

What are the different stages in the International Biology Olympiad?

Stage I – National Standard Examination In Biology (NSEB)
Stage II – Indian National Biology Olympiad (INBO)
Stage III – Orientation cum Selection Camp (OCSC) in Biology
Stage IV – Pre-Departure Training Camp (PDT)
Stage V – Participation In International Biology Olympiad (IBO)

In OCSC, how is the IBO team chosen?

The Orientation Cum Selection Camp (OCSC) compiles a list of INBO’s best performances. A prize of Rs.5000 is given to each of the winners. This OCSC round is used to assess applicants’ theoretical and practical skills in the discipline of biology. Finally, 4-6 students are chosen for the Indian team for the IBO, depending on their performances.

What does INBO stand for in full?

INBO stands for Indian National Biology Olympiad. It is a national level test held by the Homi Bhabha Centre For Science Education (HBCSE) for students in classes 11 and 12.


  1. Hi there, i JUSTPASSED MY GRAE 12 THIS YEAR IN JUNE. Can i apply for INBO