X is the seed plant in which the seeds remain exposed over the surface of the megasporophylls because the latter are not folded to form pistils.
Which of the following is not a regular feature of the given plant X?
According to the given characteristics X is a gymnosperm. Gymnosperms are perennial plants which possess naked seeds. Most of the gymnosperms have branched stem (Pinus, Cedrus) and some have unbranched (Cycas). Xylem generally lacks vessels and phloem is devoid of companion cells and sieve tubes.