Biology

Explore the science of life from molecular foundations to complex ecosystems. Build your knowledge and problem-solving skills for the IJSO biology section.

← Back to Theory
Cell Biology

Cell Biology

Cell structure, function, and processes

Explore Topic
Molecular

Molecular Biology

Invisible world that governs all living organisms

Explore Topic
Human Biology

Human Biology

Human structure, function, and behavior

Explore Topic
Zoology

Zoology

Animal structure, function, and behavior

Explore Topic
Botany

Botany

Plant structure, function, and diversity

Explore Topic
Genetics

Genetics

Inheritance, DNA, and genetic mechanisms

Explore Topic
Ecology and Environment

Ecology

Interactions between organisms and environment

Explore Topic
Microbiology and Biotechnology

Evolutionary Development

Learn the links in developmental changes to evolutionary relationships.

Explore Topic
🎯

Test your readiness with IJSO-style biology practice questions

Apply your knowledge with our collection of IJSO-style biology problems.

View Practice Questions
📝

Test your readiness with IJSO-style biology mock tests

Simulate the real exam experience with full-length biology mock tests crafted in the spirit of the IJSO.

View Mock Tests