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Proportion - GCSE Biology Definition

Reviewed by: Lára Marie McIvor

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In GCSE Biology, proportion refers to the part of a whole, shown as a fraction, ratio, or percentage. It is used to compare quantities within a group or system. For example, in an ecosystem, you might study the proportion of one species compared to the total number of organisms. Proportion helps students analyse patterns, relationships, and changes in biological data, such as in food chains, populations, or experimental results.

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Lára Marie McIvor

Reviewer: Lára Marie McIvor

Expertise: Biology, Psychology & Sociology Subject Lead

Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.

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