Seeds
Dandelion
The earliest plants with seeds evolved from plants with spores during the Devonian period, about 350 million years ago. The seeds made a hard wrapper around the plant's reproductive cell, to protect it so that the new baby plant could survive even if it didn't fall into good ground for growing in.
During the Permian period, about 290 million years ago, these new seed plants became much more common and spread over all of the Earth's land. Most of these new plants were conifers, or pine trees, that wrapped their seeds in pine cones to protect them.
But the seeds from pine trees had
Learn by doing - Seeds
To find out more about plants, check out these books from Amazon.com or from your library:
