Evolution of seeds

Question

When and how did seeds first evolve in plants.   What is the importance of their evolution?

Answer 1

The origin of seed plants is a problem that still remains unsolved. However, more and more data tends to place this origin in the middle Devonian. As with modern ferns, most land plants before this time reproduced by sending spores into the air, that would land and become whole new plants. Using seeds, plants would use fewer resources.