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Halifax Shopping Centre homicide update | SaltWire #newsupdate #halifax #police #newstodayWASHINGTON - Flowering plants - from corn, wheat, rice and potatoes to maple, oak, apple and cherry trees as well as roses, tulips, daisies and dandelions and even the corpse flower and voodoo lily - are cornerstones of Earth's ecosystems and essential for humankind.
Angiosperms, plants that produce flowers and generate their seeds in fruits, encompass about 330,000 species and comprise about 80% of the world's plants. They include, among others, all the major food crops, grasses, most broad-leaved trees and most aquatic plants. Their closest relatives are the gymnosperms, a group that preceded them on Earth and includes conifers and some others, with a bit more than 1,000 species.
Gymnosperms and angiosperms both have seeds, but the flowering plants have enclosed seeds that protect them from dehydration and enable them to prosper in a wider range of environments, from tropics to deserts to Antarctica. "Remarkably," Baker said,"we have been able to use the 'molecular fossil record,' the accumulated change in DNA over time, to see real evidence of that explosion happening at the dawn of the angiosperms."
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