Among known plant species, which of these have been the two most commonly occurring phenomena that have led to the origin of new species?

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Sympatric speciation, which occurs when two or more populations of a species share the same geographical area but develop reproductive isolation, is one of the most common mechanisms leading to the origin of new plant species. It can result from various factors, including polyploidy, which is another common occurrence in plants. Polyploidy is the presence of more than two sets of chromosomes and can arise from hybridization events or errors during cell division. Polyploid plants often have altered characteristics that can prevent them from successfully reproducing with their progenitors, leading to speciation. Therefore, sympatric speciation and polyploidy are the two most commonly occurring phenomena leading to the origin of new plant species.

Among Known Plant Species, Which of These Have Been the Two