Most modern gymnosperms are trees with woody trunks, and gymnosperms are the most ancient seed plants. Given these facts, the most ancient what are trees with woody trunks among the following options:
- it needs them
 - leafy greens
 - more abundant
 - Leeuwenhoek
 - flowering buds
 - pollen
 - graptolites
 - seed plants


 

        seed plants 