| These data suggest that the enzyme is well conserved in plants and could play similar physiological roles in angiosperms and gymnosperms. |
| The plants in this age also switched over to gymnosperms instead of being Cycads. |
| Archegonia occur in most gymnosperms except Gnetum and Welwitschia, but they are lacking in all angiosperms. |
| Among the plant branches, there were several supported groupings representing only gymnosperms or conifers. |
| The gymnosperms are of very ancient lineage and include the earliest trees on the evolutionary scale. |
| Simple trichomes are present on aerial surfaces of most angiosperms and on some gymnosperms and bryophytes. |
