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.

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 ...

Many people choose to pick out the stringy bits of a banana after assuming it is just part of the peel, but a doctor is urging people to stop doing that. The strands are actually phloem bundles, which ...

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 ...

The commenter continued that as time passes, the xylem and phloem (vascular tissues in plants that transport water, nutrients, and food throughout the plant) expand with the width of the tree ...