Sentences with phrase «as gymnosperms»
The genome of Picea abies, one of the largest ever sequenced, appears May 22 in Nature and is one of several that have been read out recently from trees known as gymnosperms — seed - bearing plants that don't produce flowers.
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They were directly preceded by a group known as the gymnosperms, whose mode of reproduction is more rudimentary and whose modern - day representatives include conifers.
Not exact matches
There are an estimated 270,000 known species of angiosperms, or flowering plants, but only about 900 species of gymnosperms, which are nonflowering plants such as conifers, cycads, and ginkgoes.
As in the flowering plants, the evolution of the large genome sizes of gymnosperms involved both polyploidy and repetitive element activity.