Local + District (Rounds 1–2)
- Format
- Round 1: MCQ via 753 Local Committees (school science teachers, ≈2,500 students) · Round 2: MCQ via 77 District Committees
- Who can sit
- Age 16–19, below university
8 resources · 4 papers
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Animal Anatomy & Physiology · Cell Biology · Genetics & Evolution · Plant Anatomy & Physiology · Ecology
Investigate cell biology, genetics, evolution, and ecology with the depth required for IBO and national biology exams.
The Biology ladder, level by level — what each round looks like, when it happens, and what to study.
8 resources · 4 papers
12 resources · 6 papers
0 resources · 2 papers
7 resources · 34 papers
Facts verified from 4 published sources · last updated 2026-10-24
Which exam are you sitting?
Showing 23 of 23 resources · 43 of 43 papers
Curated resources for Biology.
The most complete free transcription of the CDC Biology curriculum found: all 20 units, exact teaching hours, every sub-topic, exam structure (75 + 25), and Grade-11-vs-12 differentiation. This is the document to build District prep from.
Free handwritten notes + question papers, downloadable as PDF (unlike Sajha Notes)
Chapter-by-chapter NEB Botany solutions in Nepali — the only Nepali-language biology video resource found
Free Nepali non-profit video lessons
"Explore Botany and Zoology chapter-wise notes and learning materials. 27 Topics — Part A: Botany 01 Plant Anatomy, 02 Water Relation, 03 Photosynthesis…"
⚠️ Badly incomplete. Verified content: one section "Biomolecules and Cell Biology — 4 topics", of which two are literally labelled "Coming soon" (only Biomolecules and Carbohydrates and Amino Acids and Proteins are written). Contrast with Sajha's excellent Chemistry coverage. → Gap B-6
Full university-track general biology, free. The direct upgrade path from NEB.
Lighter, non-majors route — good for Grades 10–11 entry
"Learn advanced concepts for the Biology Olympiad — for free. 400+ pages of written handouts & practice problems." Its handouts are organised into exactly the IBO's seven official §3.7.3 domains — see §2.4. The single best free resource in this subject.
IBO domain III — 25 %, the heaviest single domain
IBO domain VII — 5 %
IBO domain I — 20 % of the exam
IBO domains VI + IV — 10 % + 5 %
IBO domain V — 20 %
All six domain libraries
IBO domain II — 15 %
Study plans, books, topic roadmaps, practice questions for IBO/USABO/INBO
On-ramp guide, textbook list, study group
Official study materials, past papers, community study groups for USABO & IBO
Exam instructions, honor code, apps, current-cycle materials
Academic analysis of how IBO assessments are actually constructed. Useful for anyone writing Nepali mock papers.
403 to scripts (publisher bot-wall); resolves in a browser. Also reachable via DOI 10.1187/cbe.19-10-0215
All six domain libraries
Format, what gets tested, recommended resources, past papers, strategy
On-ramp guide, textbook list, study group
Official study materials, past papers, community study groups for USABO & IBO
Full university-track general biology, free. The direct upgrade path from NEB.
Real competition papers, grouped by round and year. Print one and sit it like the real exam.
LIVE ⚠️ proprietary — CEE states exams "may not be distributed or stored electronically without permission." Link, never mirror.
encrypted
LIVE ⚠️ proprietary — CEE states exams "may not be distributed or stored electronically without permission." Link, never mirror.
Password is obtainable only from the National Biology Olympiad coordinator — for Nepal that is STAN / Manoj Acharya. → Gap B-7
HBCSE requires email for the IBO-paper password: olybio[at]hbcse[dot]tifr[dot]res[dot]in
⚠️ proprietary
LIVE but see §8.4 — most individual file links are cosmetic
What is examined in the Biology Olympiad, round by round. Tick items as you revise, or print this page as a checklist (ticks are not saved).
Draft taxonomy — official transcription in progress
Weights are the IBO Operational Guidelines v.7's own (§3.7.3) — source ↗
NEB devotes 42 of 256 hours (18.8%) against the IBO's 25% weight — under-taught (B-9 analysis).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
NEB devotes 27 of 256 hours (12.1%) against the IBO's 20% weight; microbiology (5 h) and biotechnology (7 h) units add partial depth (B-9).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
NEB Genetics (21 h) + Evolution (15 h) = 36 h (16.1%) against the IBO's 20% (B-9).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
NEB Plant Anatomy (8 h) + Plant Physiology (20 h) = 28 h — broadly matched to the IBO's 15% (B-9).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
NEB devotes 24 h (10.7%) against the IBO's 10% — matched (B-9).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
Only ~3 teaching hours in the entire NEB curriculum against a 5% IBO weight — 3.7× under-weighted (B-9).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
NEB devotes 64 h (28.6%) to a domain the IBO weights at 5% — 5.7× over-taught (B-9).
Source: IBO Operational Guidelines v.7 §3.7.3 (via biology research file) ↗
NEB fully covers 0 of the 7 IBO Appendix-2 practical-skills sections (B-8 analysis).
Source: IBO Operational Guidelines v.7 Appendix 2 (via biology research file) ↗
Once you've grabbed the materials, explore how the topics connect and chart your preparation.
Every official Biology topic, placed on the round that examines it first.
Pick a topic to filter the study materials and past papers down to just that area.
IBO domain III — 25% of the theory exam; the heaviest single domain.
IBO domain I — 20% of the theory exam; Nepal's weakest IBO lab component (16% of gold-medal level in 2026).
IBO domain V — 20% of the theory exam.
⚠ No Nepali material — self-study required
IBO domain II — 15% of the theory exam. Omitted from the old site taxonomy.
IBO domain VI — 10% of the theory exam; well matched by the NEB curriculum.
⚠ No Nepali material — self-study required
IBO domain IV — 5% of the theory exam; only ~3 teaching hours in the entire NEB curriculum.
IBO domain VII — 5% of the theory exam, yet 28.6% of NEB biology teaching hours.
⚠ No Nepali material — self-study required
IBO Appendix 2 skills — 4 labs × 1.5 h is half the IBO; NEB fully covers 0 of the 7 sections.
A representative problem from Biology.
Featured problem coming soon
We verify every statement against an official source before it appears here. No fabricated problems ship to production.
Draft stages — real dates and actions are being transcribed from the official notices.
Build core concepts from your school syllabus before touching Olympiad-level problems. Focus on accuracy over speed.
Outcome — Confident with fundamentals
Work through Olympiad problems by topic. Start recognising the patterns that sit behind the problems.
Outcome — Topic-level fluency
Tackle multi-concept and proof-based problems. Develop rigorous, competition-grade arguments.
Outcome — Solves hard problems
Attempt full-length past papers under real timing. Build stamina and exam temperament.
Outcome — Exam-ready speed
Final refinement. Light practice, weak-area review, and peak taper before the national round.
Outcome — Compete at nationals
Official contacts for the Biology Olympiad, and the content gaps we are working to fill.
Hosting & appointing institution for NBO; IBO-registered 'official website' is this Facebook page
IBO Country Coordinator for Nepal — contact for IBO paper password & NBO past papers
INBO papers + IBO paper passwords
National olympiad recognition (कार्यविधि २०८२)
NEB Grade 11–12 Biology curriculum
STAN/NBO has no website — the IBO-registered 'official website' is a Facebook page
Nepal's IBO participation record is undocumented for 2017, 2018, 2022–2025
No standard-raising pathway between NBO and IBO — the 2026 national champion placed 301/302 at the IBO
No NBO syllabus has ever been published at any tier
Zero published NBO past papers — Rounds 1–4 and the Practical Round
Sajha Notes' Grade 11 Biology is abandoned (2 of 4 topics say 'Coming soon'; no Grade 12 page)
Nepal cannot access most IBO past papers (2022/2023 sets with keys are password-protected)
No practical biology training material — NEB fully covers 0 of the 7 IBO Appendix-2 skill sections
NBO Round 4 is not weighted to the IBO (NEB over-teaches biosystematics 5.7×, under-teaches the two heaviest domains)
No Nepali-language (नेपाली) biology olympiad material
No calibrated difficulty ladder across the tiers
Participation is the binding constraint — 98.5% of eligible schools do not enter
Topic tree should be re-based on the IBO's 7 domains with official weights
Pick a topic, follow the constellation, and start building toward the Biology national round.