The primitive nature of the whisk fern is underscored by its having flagellated sperm, unlike the more advanced flowering plants, the angiosperms. The simple branched stems of Psilotum recalls the structure of the rhyniophytes, and the whisk fern is unique among living vascular plants in its lack of roots and leaves.
Answer:
It has 2 significant figures
Yes. it provides energy for the rest of the cell by creating energy from nutrients.
