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INTERNATIONAL BIOLOGY OLYMPIAD
2025
July 20 - 27, 2025
Quezon City, Philippines

Organizers and Hosts

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Ateneo de Manila University
Department of Biology

Department of Science and Technology
Science Education Institute

Ateneo de Manila
University

Format of Tests

Theoretical Exams

(24 July 2025, Ateneo de Manila University)

The Theoretical Exams of the IBO test the competitors' understanding, processing, and application of biological knowledge. There will be two exams, each with a duration of three (3) hours. The exams will cover the following topics in the indicated proportions:
 

  • Cell biology (20%)

    • ​Structure and function of cells and their components

    • Microbiology

    • Biotechnology

  • Plant anatomy and physiology (15%)

    • ​(with emphasis on seed plants)

  • Animal anatomy and physiology (25%)

    • ​(with emphasis on vertebrates and especially humans)

  • Ethology (5%)

  • Genetics and Evolution (20%)

  • Ecology (10%)

  • Biosystematics (5%)

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Practical Exams

(22 July 2025, Ateneo de Manila University)

The Practical Exams of the IBO consist of tasks that evaluate the competitors' ability to solve biological problems using skills and methods commonly used in biological laboratories. There will be four exams, each with a duration of one (1) hour and 30 minutes.

The four exams are on:

  • Biomedical Sciences

  • Cell and Molecular Biology

  • Ecology and Systematics

  • Microbiology

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About the Logo

Blue, red, and yellow are also the colors on the flag of the Philippines. The majestic Philippine eagle (Pithecophaga jefferyi Ogilvie-Grant, 1896) is the country's national bird and so figures prominently in the logo. The microbes and DNA base pairs, in yellow, represent the normally unseen yet no less essential elements of biodiversity. The logo was designed by Dr. Janlo Robil.

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