Companion cells provide the energy for the sieve cells. The end walls of the sieve cells have pores through which sugar is transported from cell to cell.

The vascular network consisting of phloem and xylem (wood) provides plants with structural support and long-distance transport that specifies further downstream processes in the sink tissues (such as ...

Either way, they are never wanted. We’re talking about those annoying white strings on bananas, or more technically, “phloem bundles.” (Appetizing name, right?) Anyone who’s peeled a ...

These strands, called phloem bundles, are crucial for the fruit's growth, distributing nutrients throughout the banana.