![]() ![]() “The reproductive structures look different in all these plants, but they all have about the same number of parts during that stasis.” An unusual comparisonįlowers are more diverse than every other group of plants, producing colors, smells and shapes that nourish animals and delight the senses. ![]() “The most surprising thing is this kind of stasis, this plateau in complexity after the initial evolution of seeds and then the total change that happened when flowering plants started diversifying,” said lead study author Andrew Leslie, an assistant professor of geological sciences at Stanford’s School of Earth, Energy & Environmental Sciences (Stanford Earth). 17 in Science, offer insight to the timing and magnitude of those changes. The research uses a novel but simple metric to classify plant complexity based on the arrangement and number of basic parts in their reproductive structures. While scientists have long assumed that plants became more complex with the advent of seeds and flowers, the new findings, published Sept. The first occurred early in plant history, giving rise to the development of seeds, and the second took place during the diversification of flowering plants. A Stanford-led study reveals that rather than evolving gradually over hundreds of millions of years, land plants underwent major diversification in two dramatic bursts, 250 million years apart. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |