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Olympiad
International Biology Olympiad

International Biology Olympiad 2025

The International Biology Olympiad is a competition for secondary school students. The competition occurs annually in July and is hosted by one of the member countries of the IBO Association. This year, the IBO 2025 is organized by the Ministry of Education of the Republic of Kazakhstan. Through this competition, students' ability to tackle biological problems and conduct experiments is assessed. Interest in Biology, creativity, inventiveness, and perseverance are essential for participants. Each member country nominates four students who are winners of their national competitions. In this article, we will explore the International Biology Olympiad (IBO) exam, its structure, the topics covered, and its significance in promoting Biology education and fostering international scientific collaboration.

1.0About International Biology Olympiad 2025

The International Biology Olympiad (IBO) is like a big science competition for high school students worldwide. It tests their understanding of biology. This year's IBO in 2025 is all about bioinformatics, a mix of biology, math, statistics, computer science, and data science. It's happening in Astana, Kazakhstan.

The main goals of the IBO are:

  • To get more people interested in biology and related sciences.
  • To give students from different countries a chance to compete together.
  • To inspire more research and progress in biology.

Highlights of IBO International Biology Olympiad

If you are interested in the International Biology Olympiad, you must know the crucial details. Here, we are providing a table highlighting key aspects of the competition:

Full Exam Name

International Biology Olympiad

Short Exam Name

IBO

Conducting Body

This year, Astana, Kazakhstan

Frequency of Conduct

Annually

Languages

English

Mode of Exam

Theoretical and Practical

Official Websites

ibo-info.org/en/

2.0IBO International Biology Olympiad: Exam Dates

To create a study schedule, you need to know the dates of the exams. When you know the date, you can allocate an appropriate time based on the weight and complexity of different topics. The following are the dates for the IBO International Biology Olympiad exams:

Event

Date

IBO 2025 Registration Process

To be notified

IBO 2025 Exam Dates

20th - 27th July, 2025

Result of International Biology Exam

July 2025

3.0International Biology Olympiad Syllabus

Despite common knowledge, IBO has no fixed syllabus or curriculum. This implies that students cannot just memorize a list of topics and expect to achieve success in their IBO exams, regardless. In spite of that, rules determine the content and skill set necessary for these exams.

Theoretical exams

Theoretical tasks in the IBO aim to assess competitors' comprehension, processing abilities, and application of biological knowledge. They should cover the following topics in the specified proportions.

Theoretical Exam Topics

Proportion (%)

I. Cell Biology

  • Structure and function of cells and their components
  • Biotechnology
  • Microbiology

20

II. Plant Anatomy and Physiology

(with emphasis on seed plants)

15

III. Animal Anatomy and Physiology

(with emphasis on vertebrates and especially man)

25

IV. Ethology

5

V. Genetics and Evolution

20

VI. Ecology

10

VII. Biosystematics

5

Practical Exams

In the practical examination, competitors should be assessed on their ability to solve biological problems using common laboratory methods and skills. Below are a few valuable skills that can be tested at the IBO Competition but are partial.

Types of Practical Skills

Topic Name

Science Process skills 

  • Observation
  • Measurement
  • Grouping or classification
  • Relationship finding
  • Calculation
  • Data organization and presentation: graphs, tables, charts, diagrams,
  • photographs
  • Prediction/projection
  • Hypothesis formulation
  • Operational definition: scope, condition, and assumption
  • Variable identification and control
  • Experimentation: experimental design, experimenting, result/data recording,
  • result, interpretation, and conclusion.
  • Representing numerical results with appropriate accuracy (correct number of
  • digits)

Basic biological skills 

  • Observation of biological objects using magnifying glasses
  • Work with a microscope (objective max. 45 x)
  • Work with a stereomicroscope
  • Drawing of preparations (from a microscope, etc.)
  • An exact description of a biological drawing using tables of biological terms marked
  • with a numerical code 

Biological methods

  • Cytological methods
  • Methods to study plant anatomy and physiology
  • Methods to study animal anatomy and physiology
  • Ethological methods
  • Ecological and environmental methods
  • Taxonomic methods

Physical and chemical methods

  • Separation techniques: chromatography, filtration, and centrifugation
  • Standard tests for monosaccharides, polysaccharides, lipids, and protein (Fehling, I2)
  • in KI(aq), biuret)
  • Titration
  • Measuring quantities by drip and strip methods
  • Dilution methods
  • Pipetting, including the use of micropipettes
  • Microscopy, including the use of counting chambers
  • Determination of absorption of light
  • Gel electrophoresis

Microbiological methods

  • Preparing nutrient media 
  • Aseptic techniques (flaming and heating glass material) 
  • Inoculation techniques 

Statistical methods

  • Probability and probability distributions 
  • Application of mean, median, percentage, variance, standard deviation, standard error, T-test, chi-square test 

4.0International Biology Olympiad Eligibility

To participate in the competition, individuals must meet the following criteria:

  • Winners of NBO: Competitors must be the winners of the National Biology Olympiad (NBO) held in the current school year in the country they represent.
  • School Enrollment: Competitors should be enrolled as students in a regular secondary school for general education in the country they represent.
  • Training Limitation: Competitors must have not received training or instruction within a selected group of 50 or fewer students, including the IBO team, for longer than two weeks.
  • Age Requirement: Competitors should be born on 1 July or later in the year of the competition, minus twenty.

5.0How to Apply for the International Biology Olympiad?

The main requirement for participating in the IBO Competition is to join the IBO Association. Here are the summarized requirements for membership:

  1. You must be the organizer of a National Biology Olympiad (NBO) and have official recognition from the Ministry of Education or an equivalent authority.
  2. You need to provide an up-to-date description of your NBO and contact information.
  3. You must follow the rules of the IBO Association, the operational guidelines, and the decisions made by the General Assembly (GA).
  4. You are required to pay an annual membership fee to the IBO Association.

The General Assembly makes decisions about membership and exclusions, usually during the Annual General Meeting held during the IBO Competition.

6.0Exam Pattern of International Biology Olympiad India

Exam Pattern helps you to understand the detailed structure of how the exam will be conducted. It provides information about the questions, markings, durations, and more. So, here is a brief overview of the exam pattern of IBO 2025:

  1. The IBO test has two parts: the theoretical component and the practical component. It covers cell biology, molecular biology, the anatomy and physiology of plants and animals, animal behaviour, genetics and evolution, ecology, and biosystematics. 
  2. Both theoretical and practical marks contribute equal amounts to the total score, approximately half each.
  3. Timing and Location:

The IBO Competition takes place annually in July in one of the IBO Association member countries.

  1. Examination Format:
  • The IBO Competition comprises both theoretical and practical (experimental) examinations.
  • The recommended duration for each part is four to six hours, with a break for refreshment.
  • There must be a minimum one-day interval between the two examinations.
  1. Question Point Allocation:
  • Points available for each question must be communicated to the participants.
  • Error carried forward must be applied for marking in all exams, where applicable.

7.0International Biology Olympiad Previous Years Papers

Students appearing for the IBO 2025 exam can refer to previous years' question papers to understand the exam structure and marking scheme. These IBO past papers will also help them increase their speed for the actual exam, and they will gain confidence to perform well on the main exam day. The International Biology Olympiad 2025 past year's papers can be accessed from the IBO's official website (https://www.ibo-info.org/en/info/papers.html).

8.0International Biology Olympiad Results

The procedure of declaring the results of IBO 2025 exams includes various important steps. First, it is the duty of the International Jury to meticulously examine and accept the official results, as well as any individual awards given to participants, before their declaration by the host.

Notably, the outcome will be announced individually and not as a total national team result. Moreover, each contestant will be awarded a certificate for taking part in the IBO. 

It's stressed that all discussions are kept confidential until the official release of the results, ensuring fairness and impartiality in the assessment process.

9.0International Biology Olympiad 2025 Awards

The IBO awards are given to the top-performing students at IBO. The t-score method determines winners by carefully considering both practical and theoretical marks.

Following are the details of the IBO awards:

  • Gold Medal
  • Silver Medal
  • Bronze Medal
  • Certificate of Merit.

Table Of Contents


  • 1.0About International Biology Olympiad 2025
  • 1.1Highlights of IBO International Biology Olympiad
  • 2.0IBO International Biology Olympiad: Exam Dates
  • 3.0International Biology Olympiad Syllabus
  • 3.1Theoretical exams
  • 3.2Practical Exams
  • 4.0International Biology Olympiad Eligibility
  • 5.0How to Apply for the International Biology Olympiad?
  • 6.0Exam Pattern of International Biology Olympiad India
  • 7.0International Biology Olympiad Previous Years Papers
  • 8.0International Biology Olympiad Results
  • 9.0International Biology Olympiad 2025 Awards

Frequently Asked Questions:

Participation in the International Biology Olympiad (IBO) provides students a platform to showcase their knowledge and skills in biology on an international level. It offers opportunities for networking and collaboration with like-minded peers from around the world.

1. Start by thoroughly understanding the syllabus and exam pattern of the IBO. 2. Practice regularly with various Biology-related study materials, including textbooks, reference books, and past exam papers. 3. Focus on strengthening your understanding of fundamental biological concepts and principles. 4. Work on developing strong problem-solving and analytical skills through regular practice and mock tests. 5. Get valuable insights and feedback from experienced mentors at ALLEN to guide your preparation strategy.

International Biology Olympiad questions can be found in various study materials, including official IBO publications, textbooks, online resources, and practice question banks. Utilize mock tests and sample papers designed explicitly for IBO preparation to get a feel for the types of questions asked and the exam format.

The International Biology Olympiad question papers are typically provided to registered participants by the organizing committee. Participants may receive the question paper in hard copy format during the examination or electronically through secure online portals.

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