IB Biology IA Example Courseworks

Past IB biology IA’s with marking rubrics and examiner comments

This page contains links to several official IB biology IAs across several biology IA topics. They are all conducted by previous International baccalaureate students. The biology IA examples have been marked, following the IB biology IA criteria, by official IB biology IA examiners. The resulting IA examiner comments are also provided for each biology IA.

We suggest you use these International baccalaureate biology IAs to get IB biology IA ideas and explore possible biology IA topics for your own Internal Assessment

IB Biology Example IA's

Mark: 21/24

IBO Site
A study on the effect of smoke water on the germination and growth of Eucalyptus pilularis
Student PDF Examiner PDF

Mark: 10/24

IBO Site
The effect of sunlight on biomass
Student PDF Examiner PDF

Mark: 19/24

IBO Site
Fire ecology
Student PDF Examiner PDF

Mark: 19/24

IBO Site
Different methods of fruit ripening and the metabolism of starch to glucose in nectarines
Student PDF Examiner PDF

Mark: 19/24

IBO Site
Investigating the Effect of Time on the Plasmolysis of Potatoes
Student PDF Examiner PDF

Mark: 19/24

IBO Site
The structure and function of barley amylases
Student PDF Examiner PDF

Mark: 21/24

IBO Site
The effect of light levels on the predation of the peppered moth
Student PDF Examiner PDF

Mark: 16/24

IBO Site
Investigating the effect of different light intensities on water weed
Student PDF Examiner PDF

Mark: 19/24

IBO Site
Comparing the effect of light quality on the photosynthetic rate in Lycopersicon esculentum
Student PDF Examiner PDF

Mark: 8/24

IBO Site
Does the presence of lactose in E.coli increase the rate of activity of the enzyme beta-galactosidase?
Student PDF Examiner PDF
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