Plant evolution is the subset of evolutionary phenomena that concern plants. Evolutionary phenomena are characteristics of populations that are described by averages, medians, distributions, and other statistical methods. This distinguishes plant evolution from plant development, a branch of developmental biology which concerns the changes that individuals go through in their lives. The study of plant evolution attempts to explain how the present diversity of plants arose over geologic time. It includes the study of genetic change and the consequent variation that often results in speciation, one of the most important types of radiation into taxonomic groups called clades. A description of radiation is called a phylogeny and is often represented by type of diagram called a phylogenetic tree.
Read more about Plant Evolution: Evolutionary Trends, Polyploidy, See Also
Famous quotes containing the words plant and/or evolution:
“Do we honestly believe that hopeless kids growing up under the harsh new rules will turn out to be chaste, studious, responsible adults? On the contrary, by limiting welfare, job training, education and nutritious food, won’t we plant the seeds for another bumper crop of out-of-wedlock moms, deadbeat dads and worse?”
—Richard B. Stolley (20th century)
“Analyze theory-building how we will, we all must start in the middle. Our conceptual firsts are middle-sized, middle-distanced objects, and our introduction to them and to everything comes midway in the cultural evolution of the race.”
—Willard Van Orman Quine (b. 1908)