What does phloem take to the roots?
Sugar/ sucrose - the products of photosynthesis
While xylem transports only in one direction...up, the phloem can move nutrients in either direction. The phloem gets nutrients from the roots to take up to the leaves to be used in photosynthesis and moves sugars and other nutrients produced from the photosynthetic process down to the roots for storage.
The roots of most dicots originate from the radicle. They appear in an X shape - with the xylem in the centre, and phloem in the gaps. By contrast, the radicle of monocots aborts, and the roots appear to originate almost at random from nodes in the stem. The phloem and xylem alternate - forming a circle.