IB Biology Unity and Diversity Concepts

Unity and Diversity connects water, molecules, cells, classification, evolution and biodiversity into evidence-based explanations of shared life patterns and biological variation.

Exam analysis

Published Concept evidence in Unity and Diversity repeatedly links cell structures, nucleic acids, organism diversity and evolution. The strongest pattern is not isolated recall, but explaining how molecular and cellular evidence supports biological unity, variation and classification.

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Recent 5 years · Updated 22 Jul 2026

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