These are distributed differently in roots and stems. In the root, the xylem forms a central column. It forms a solid support. The phloem is towards the centre, outside the xylem. Any green part ...

Vascular cambium produces xylem (wood) and phloem, and together with the cork cambium, which produces a protective layer at the surface called phellem (cork), they provide thickness to plant organs.

In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels.

More information: Ke‐Yan Zhang et al, Linkages among stem xylem transport, biomechanics, and storage in lianas and trees ...

A 25-year-old woman with type 1 diabetes started producing her own insulin less than three months after receiving a transplant of reprogrammed stem cells 1. She is the first person with the ...

The filing of candidacy for the May 2025 elections started last Tuesday and will last until October 08. This is not yet the ...

Garrett Andrews is an adjunct faculty member in the Department of Political Science at Portland Community College where he teaches State and Local Government. With five years of experience as a ...

Stem cells are cells that have the capacity to self-renew by dividing and to develop into more mature, specialised cells. Stem cells can be unipotent, multipotent, pluripotent or totipotent ...

SNHU offers educational pathways in Science, Technology, Engineering and Mathematics (STEM) to help our students get the skills they need to become successful. The School of Engineering, Technology, ...

To determine the top 500 science, technology, engineering and math schools, U.S. News looked at the top 2,000 public schools from our latest Best High Schools rankings, and then evaluated their ...