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. INBO Exam
Students should familiarize themselves with the INBO Exam Pattern and Eligibility Requirements prior to registering for the test. Additionally, information about the various INBO stages is provided on this website.

Criteria for INBO Eligibility
Those preparing for the INBO Exam need to fulfill the following prerequisites:
- To be eligible for the Biology Olympiad Program, the candidate must pass the National Standard Examination for Biology, Stage 1 (NSEB).
- The applicant needs to fulfill the prerequisites for an Indian passport.
- They have to be citizens of India and enrolled in Indian educational institutions.
- Only seniors in their final year of high school are eligible to apply for INBO. Nonetheless, those who have completed the NSEB exam and are in grades 10 and 11 are qualified to apply.
- They will not be considered eligible if they apply for the National Standard Examination in Junior Science (NSEJS) in the same year.
- In addition, students who are Indian citizens living abroad (OCIs) will not be chosen for the Biology Olympiad Program.
How to Register for the INBO Exam
Some of the actions that candidates must perform in order to enroll themselves are described below. The steps are as follows:
- This is the official website: hbcse.tifr.res.in.
- Â From the drop-down menu, choose Olympiad.
- Click the link to see an upcoming events list.
- Enter your DOB, roll number, and NSE center code to enroll in INO.
- You have the option to choose the exam location when you register.
INBO Exam Syllabus and Exam Pattern
For the first and second levels, the NSEB and INBO syllabus closely resembles the senior secondary level (up to class XII) of the CBSE board. The International Olympiad’s syllabus and the third stage’s are identical. Owing to the ongoing epidemic in the nation, the organizing body, HBCSE, has decided to combine the NSEB and INBO exams into a single test, combining the phases of the Biology Olympiad Program. Part 1 of the test (National Standard Examination for Biology) and Part 2 (INBO) will comprise this three-hour assessment INBO Exam.
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
Many students want to know the test results as soon as they finish it. The INBO Exam Result is available to all test takers via the official HBCSE website, secure.hbsce.tifr.res.in/ino/. Candidates cannot view their results until specific information has been completed.
Frequently Asked Questions on INBO – Indian Biology Olympiad (INBO)
Q1 Are INBO and IBO synonymous?
The Indian National Biology Olympiad is known as INBO, and the International Biology Olympiad is known as IBO. The second phase of the Biology Olympiad Program, which is used to choose competitors for the International Biology Olympiad (IBO), is called the Indian National Biology Olympiad (INBO). Applicants are not permitted to sit for the IBO exam if they fail the INBO exam.
Q2 Who is eligible to sit for the INBO examination?
You need to have passed the first level of the Biology Olympiad Program, the NSEB (National Standard Examination in Biology), in order to be eligible for the INBO test.
Q3 What are the International Biology Olympiad’s several stages?
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)
Q4 How is the IBO team selected in OCSC?
The list of INBO’s top performances is compiled by the Orientation Cum Selection Camp (OCSC). Each winner receives a prize of Rs. 5,000. The purpose of this OCSC round is to evaluate candidates’ theoretical and practical biology knowledge. Lastly, 4-6 students are selected, based on their performances, for the Indian squad for the IBO.
Q5 What does INBO fully stand for?
The Indian National Biology Olympiad is known as INBO. For students in classes 11 and 12, the Homi Bhabha Centre For Science Education (HBCSE) administers this national exam.
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