# Describe the role of the phloem in a flowering plant, including the substances transported and the direction of movement.

> Pearson Edexcel International GCSE Biology (4BI1) — 2.10 Transport: flowering plants · Describe · 4 marks

## Mark scheme (4 marks)

1. Phloem transports sucrose (and/or amino acids) through the plant.
2. Transport in phloem occurs in both directions / from source to sink.
3. Substances move from areas where they are made or stored (source, e.g. leaves) to areas where they are needed or used (sink, e.g. roots, growing regions, fruits).
4. This process is called translocation.

## Key terms

- [phloem](https://www.gradenine.co.uk/glossary/phloem)

## Related

- [Revision notes for Pearson Edexcel International GCSE Biology (4BI1)](https://www.gradenine.co.uk/learn)
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Source: [GradeNine](https://www.gradenine.co.uk/q/describe-the-role-of-the-phloem-266268dd) · Published by Druglandscape Ltd.