Key term for Edexcel GCSE Biology, used in Plant Transport.
Movement in one direction only, such as the flow of water and minerals in the xylem.
Unidirectional appears in Edexcel GCSE Biology revision content for Plant Structures and Functions, especially Plant Transport and Xylem and Phloem.
Create a free account to access Edexcel GCSE Biology revision notes, track progress, and practise related key terms.