Translations:Benutzer:Arian/Klett-Mini-Test/832/en

The root hairs excrete a portion of the assimilates formed in the leaves — sugars, protein-like mucilaginous substances, ferments, organic acids — conducted downward into the roots via the peripheral *phloem* stream. In the counter-current they take up mineral salts and water, which with its freight of substances is conducted against the force of gravity via the conducting tissue of the *xylem* up into the assimilating organs of the above-ground plant shoot.