Seed plants all have flagellated sperm
Like all seed plants, gymnosperms are heterosporous. They have flagellated sperm, but the male gametophyte grows a pollen tube, a long filament through.
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Description:The Seminoles ate the starchy roots of Zamia pumila, found in southern Florida. Seed cones can persist on the tree for several years after fertilization. Many of our familiar forest trees are conifers, including pines, spruces, firs, hemlocks, yews, redwoods and cypress trees. Welwitschia really looks like something out a science fiction novel. They are very resistant to air pollution and insects. Division Coniferophyta - sp.
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Date: 2018-07-08
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