Biology for IGCSE & O level - Transport In Plants (Section 3 - No. 33)
What is the primary function of the Casparian strip in the root endodermis?
To transport sugars.
To regulate water and mineral uptake into the xylem.
To prevent water loss from the roots.
To produce hormones.
Explanation
The Casparian strip regulates which substances enter the xylem, thereby controlling the movement of water and minerals.
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