Singapore Junior Biology Olympiad Past Papers 2021 May 2026

This paper is designed for students in Secondary 3 and 4 (Grade 9–10) and focuses on the Singapore Biology Olympiad framework: heavy emphasis on Cell Biology, Genetics, Physiology, and Application questions.

Mistake #2: Over-drawing Diagrams

In the free response, you are asked to draw a root cross-section. Students try to create an art masterpiece. Wrong. Look at the marking scheme from past papers. They give 1 mark for endodermis, 1 mark for pericycle, 1 mark for xylem. They do not give marks for shading. Use a pencil, label clearly, and move on.

National Exam TYS (Ten-Year Series): Practicing high-level questions from O-Level and A-Level Biology helps cover the 70% of the SJBO syllabus that draws from these national standards singapore junior biology olympiad past papers

Since direct past papers are unavailable, preparation is best focused on the specific standards the exam mimics: Question Weightage : The Theory Round typically consists of 80 questions (2 hours) with the following difficulty distribution: 35% 'O' Level Standard : Fundamental biology concepts. 35% 'A' Level Standard

Practical Round: A team-based challenge for the top-performing schools. Why You Must Practice with SJBO Past Papers This paper is designed for students in Secondary

Singapore Junior Biology Olympiad (SJBO) is a premier competition for upper secondary students (Secondary 2 to 4) aimed at testing critical thinking and advanced biological knowledge. The Singapore Institute of Biology Accessing Past Papers Official past year SJBO papers are not released to the public or schools

Format and Structure

Check your answers. For every question you got wrong (or guessed right), look up the underlying concept. If the question was about C4 Photosynthesis—a topic not deeply covered in O-Levels—take 20 minutes to read up on it in a textbook like Campbell Biology. Step 3: Master the Analysis

: Some students find compiled notes or unofficial practice sets on platforms like or community-led projects like Learntuitive Eclat Institute Exam Structure & Content The competition consists of two main stages: Theory Round They do not give marks for shading