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6 5 4 3 2 1 Ancestral green algae Decide where each trait fits on the cladogram for plants (i.e., when did that trait evolve). For example, a trait placed at #5 would be shared by the gymnosperms and angiosperms, but not by the ferns or mosses. •Alternation of generations = •Apical meristem = •Cell walls of cellulose = •Embryo retained in parent = •Flowers = •Fruit = •Heterospory = •Independent sporophyte generation = •Pollen = •Rosette shaped cellulose-synthesizing complexes = •Seeds = •Sporophylls = •Stomata = •Gametophyte dominated alternation of generations = •Vascular tissue = •True leaves = •True roots =