what are cones in pteridophyte and gymnosperms
The heterosporous pteridophyte show certain characteristics, which are precursor to the seed habit in gymnosperms. Explain.
Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is
(a) monocots (b) dicots (c) pteridophytes (d) gymnosperms