Evolutionary history of plants seed model is shared by basically all gymnosperms (literally: "naked seeds"), most of which encase their seeds in a woody cone or fleshy aril (the yew, for example), but none of which fully enclose their seeds. The angiosperms ("vessel seeds") are the only group to fully enclose the seed, in a carpel. Fully enclosed seeds opened up a new pathway for plants to follow: that of seed dormancy. The embryo, completely isolated from the external atmosphere and hence protected from desiccation, could survive some years of drought before germinating. Gymnosperm seeds from the Late Carboniferous have been found to contain
Seeds (Agents of S.H.I.E.L.D.) Seeds (Agents of S.H.I.E.L.D.) "Seeds" is the twelfth episode of the first season of the American television series "Agents of S.H.I.E.L.D.", based on the Marvel Comics organization S.H.I.E.L.D. (Strategic Homeland Intervention, Enforcement and Logistics Division), revolving around the character of Phil Coulson and his team of S.H.I.E.L.D. agents as they investigate attempted murder at the S.H.I.E.L.D. Science Academy. It is set in the Marvel Cinematic Universe (MCU), sharing continuity with the films of the franchise. The episode was written by Monica Owusu-Breen and Jed Whedon, and directed by Kenneth Fink. Clark Gregg reprises his role as Coulson from the film