Trees and Roots
by Chris, 1 November, 2008, 6 comments
Normally, the first structure to emerge from a seed is the embryonic root - the radicle. This grows downwards (in search of water and nutrients) as the primary or tap root. In most plants, this primary root will develop secondary or lateral roots that grow out away from the main root, as the seedling grows. The growth of any root is dependent on a small ball of dividing cells just behind the root tip. This collection of cells is called a meristem; it generates new cells to extend the root and form new root tissues (such as the xylem and phloem – the conducting tissues). Read more...
