1) Class 2) Class gymnospermae 3) Division gymnospermophyta 4) Gymnospermophyta 1) Gymnospermophyta 
An important division of the plant kingdom, being woody plants with alternation of generations, having the gametophyte retained on the sporophyte and seeds produced on the surface of the sporophylls and not enclosed in an ovary. ... (09 Oct 1997) ... 
One of the two major division of seed-bearing vascular plants of which the most common members are conifers. See Angiospermae.
[n] - plants having naked seeds not enclosed in an ovary