InBOIndian National Biology Olympiad
About InBO
InBO is the national stage of India’s biology olympiad programme, open only to the top scorers of NSEB. Run by HBCSE, the paper moves past factual recall into the territory the International Biology Olympiad occupies: interpreting experimental data, reasoning about physiological mechanisms and applying genetics quantitatively.
The strongest InBO performers are invited to the Orientation-cum-Selection Camp in Mumbai, where laboratory practicals join theory tests in deciding the four-member team that represents India at the IBO. For biology-inclined students eyeing research careers, the NSEB–InBO track is the most prestigious school-level credential available in India.
Accepted by: Top InBO scorers advance to the OCSC Biology camp at HBCSE, from which India’s four-member International Biology Olympiad team is chosen
Official websiteInBO eligibility
Students who clear the NSEB (National Standard Examination in Biology) cut-off; NSEB is open to Classes 10–12 within the IAPT age window
InBO exam pattern
Sections
- National-stage written paper with detailed-answer questions (the restructured format pairs a 75-minute objective NSE part with a written INO part)
Marking scheme: Objective components carry negative marking per the printed scheme; written sections are step-marked
InBO syllabus outline
- Cell and molecular biology, genetics and evolution, plant and animal physiology, ecology and biosystematics beyond Class 12 depth
- Aligned to the International Biology Olympiad syllabus, with data-interpretation and experimental-design questions
- Stage structure: NSEB → InBO → OCSC Biology camp (theory + practical tests) → four-member IBO team
Preparing for InBO?
Olympiads reward deep fundamentals — the same preparation that pays off later in JEE, NEET and other entrance exams. Explore every national and international olympiad, or check the official site for this year's dates and registration.