Root Hair Cells - GCSE Biology Definition

Root hair cells are specialised cells found on the surface of plant roots. They are long and thin, which increases their surface area for absorbing water and mineral ions from the soil. Their thin cell walls make it easier for water to enter the cell by osmosis. Root hair cells also help anchor the plant in the soil. In GCSE Biology, they are studied as an example of a specialised cell and to show how plants absorb the substances they need to live.