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Evolution of Plants
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Details
The evolution of plants occurred through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the environments in which they evolved, each new grade of organisation has eventually become more "successful" than its predecessors by most measures. Further, most cladistic analyses, where they agree, suggest that each "more complex" group arose from the most complex group at the time. Evidence suggests that an algal scum formed on the land 1,200 million years ago, but it was not until the Ordovician period, around 500 million years ago, that land plants appeared. These began to diversify in the late Silurian period, around 420 million years ago, and the fruits of their diversification are displayed in remarkable detail in an early Devonian fossil assemblage known as the Rhynie chert. This chert preserved early plants in cellular detail, petrified in volcanic springs. By the middle of the Devonian period most of the features recognised in plants today are present, including roots, leaves and seeds.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130224820
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Sprache Englisch
- Größe H220mm x B150mm x T10mm
- Jahr 2009
- EAN 9786130224820
- Format Fachbuch
- ISBN 978-613-0-22482-0
- Titel Evolution of Plants
- Untertitel Evolutionary Grade, Algal Mat, Bryophyte, Lycopodiophyta, Fern, Gymnosperm, Flowering Plant, Rhynie Chert, Permian-Triassic Extinction Event, Plant
- Gewicht 255g
- Herausgeber Alphascript Publishing
- Anzahl Seiten 160
- Genre Biologie
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