Exodermis

AP Biology Chapter 32 Assignment After reading this chapter and attending lecture, you should be able to: Trace the path of water and minerals from outside the root to the shoot system. Explain how a proton pump may affect mineral transport in plants. Describe the symplast and apoplast routes for the transit of water and minerals across the root cortex from the epidermis to the stele. Explain the function of the Casparian strip. Explain how solutes are transferred between the symplast and apoplast. Define water potential. Explain how solute concentration and pressure affects water potential.