- published: 30 Jul 2015
- views: 187
The eudicots, Eudicotidae or eudicotyledons are a monophyletic clade of flowering plants that had been called tricolpates or non-magnoliid dicots by previous authors. The botanical terms were introduced in 1991 by evolutionary botanist James A. Doyle and paleobotanist Carol L. Hotton to emphasize the later evolutionary divergence of tricolpate dicots from earlier, less specialized, dicots. The close relationships among flowering plants with tricolpate pollen grains was initially seen in morphological studies of shared derived characters. These plants have a distinct trait in their pollen grains of exhibiting three colpi or grooves paralleling the polar axis. Later molecular evidence confirmed the genetic basis for the evolutionary relationships among flowering plants with tricolpate pollen grains and dicotyledonous traits. The term means "true dicotyledons", as it contains the majority of plants that have been considered dicots and have characteristics of the dicots. The term "eudicots" has subsequently been widely adopted in botany to refer to one of the two largest clades of angiosperms (constituting over 70% of the angiosperm species), monocots being the other. The remaining angiosperms are sometimes referred to as basal angiosperms or paleodicots, but these terms have not been widely or consistently adopted, as they do not refer to a monophyletic group.
eudicot vs monocots
This video starts by identifying the APG III as the primary source of phylogenetic and taxonomic information used in this series. Then we address the key features that help us recognize a eudicot when we see one, and finally we do an abbreviated survey selected basal eudicot orders: the Ranunculales, the Proteales, and the Buxales. We also bring up the Gunnerales as the most basal order of the core eudicots, which we get to in later videos.
The eudicots, Eudicotidae or eudicotyledons are a monophyletic clade of flowering plants that had been called tricolpates or non-magnoliid dicots by previous authors. The botanical terms were introduced in 1991 by evolutionary botanist James A. Doyle and paleobotanist Carol L. Hotton to emphasize the later evolutionary divergence of tricolpate dicots from earlier, less specialized, dicots. The close relationships among flowering plants with tricolpate pollen grains was initially seen in morphological studies of shared derived characters. These plants have a distinct trait in their pollen grains of exhibiting three colpi or grooves paralleling the polar axis. Later molecular evidence confirmed the genetic basis for the evolutionary relationships among flowering plants with tricolpate pollen...
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It is really easy to determine a monocot and a dicot. However, first, it is important to understand that monocots and dicots actually represent the two main branches of flowering plants. That means that almost all flowering plants can be divided into one of these two groups. Of course, the key word is almost all. There are some that don't fit into the two groups all that well. The five main characters I like to use are Leaves, Roots, Stems, Cotyledons, and Flowers. For a more detailed description, visit our page at http://www.untamedscience.com/biology/plant-biology/monocots-vs-dicots
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