What is a correct statement about the movement of substances absorbed by roots?
1 )
Ions have to pass through cell walls to cross the endodermis.
2 )
Ions move through the symplastic pathway only until they reach the Casparian strip.
3 )
Soil water has a more negative water potential than the xylem sap.
Water passes through the symplastic pathway along a water potential gradient.
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