(ˈproʊtəˌstil ; ˈproʊtoʊˌstili ) noun. a simple, primitive arrangement of conducting tissues in stems and roots of certain lower plants, consisting of a solid cylinder of xylem surrounded by a layer of phloem. Derived forms. protostelic (ˌprotoˈstelic)

What is protostele give example?

The protostele has a solid xylem core; the siphonostele has an open core or one filled with generalized tissue called pith. The discontinuous vascular system of monocots (e.g., grasses) consists of scattered vascular bundles; the continuous vascular system of dicots (e.g., roses) surrounds the central pith.

What is Actinostele in botany?

: a vascular core (as in most roots and some stems) having the xylem and phloem in alternating or radial groups within a pericycle — compare stele.