Root cross section Cuticle Endodermis Cortex Xylem Phloem
Explain how roots can regulate the uptake of nutrients. Your explanation should include the name for the two "routes" marked A and B, the name of the waxy strip marked C, and how these features are important in regulating the substances that reach the xylem (D). A Symplastic Route, Apoplastic Route, Casparian strip.