The waxy ______________________ ensures that all of the water coming into a root moves into the xylem.

Question

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The Casparian strip is a waxy barrier found in the endodermis layer of plant roots. It ensures that all water entering the root must pass through the plasma membrane of an endodermal cell before entering the xylem, allowing the plant to regulate the uptake of mineral nutrients and prevent the entry of harmful substances. The cuticle is a waxy layer on the surface of leaves and stems that helps to prevent water loss, while the epidermis is the outermost cell layer of plants that provides a protective barrier. Companion cells and sieve tubes are specialized cells found in the phloem, which transports sugars and other organic molecules around the plant.

The Waxy ______________________ Ensures That All of the Water Coming