Saved Bookmarks
| 1. |
Vascular plants first developed on Earth during the _________ period. |
|
Answer» ascular Plants. The first detailed vascular PLANT fossils appear in rocks from middle SILURIAN, about 425 million YEARS ago. The oldest of these, including a plant called Aglaophyton, appear to have possessed conducting cells similar to the HYDROIDS of mosses. |
|