“EMBRYOGENESIS in higher plants, therefore, serves (i) to specify meristems and the shoot-root body pattern, (ii) to differentiate the primary plant tissue types, (iii) to generate a specialized storage organ essential for seed germination and seedling development, and (iv) to enable the sporophyte to lie dormant until conditions are favorable for postembryonic development.”
http://www.jstor.org/stable/pdf/2885440.pdf?seq=1#page_scan_tab_contents