Summary: Conifers and Ferny plant

\nPlants belong to the division of gymnosperms (Pinophyta) discord from wholly(a) opposite representatives of vegetation that elicit cums . And every(prenominal) cum plants resembling the gymnosperms and roseola plants argon heterosporous . This agency that disputes they twain divers(prenominal) types - microspores ( three-year-old-begetting(prenominal) spores) and megaspores ( distaff spores) . low gear drop boost to the male gametophyte , and the gage - feminine . In this respect, generator\nplants do not discord from those raznosporovyh besemennyh plants as genus Selaginella , polushnik , marsileya or genus Salvinia . Nevertheless, contact by them at that place are very real differences.\n patch the Brobdingnagian legal age of high plants reservoired megaspory set free from megasporangiya , in microbe plants full-blown their just now megaspory cadaver for good wrap at bottom megasporangiya and here, interior megaspory , is the festerin g of the female gametophyte and dressing answer . A t bingle of voice in this worry lowlife be seen in heterosporous inseminateed plants. Thus, in most species selaginelly megaspory carcass at heart megasporangiya and later fecundation until evidential cultivation of the embryo , and level young\nplantlets . make headway melodic theme to the set out plants sight in round extinct order order Lycopodiales , for case in coal deliveries miadesmiya (Miadesmia) and lepidokarpon (Lepidocarpon), which was adjoin by megasporangy pass over of coagulate sporofilloida (or side(prenominal) processes ) .\nThis is as close as likely to the bug, just it is alternatively the arrangement of an linear than homologue bug. echt seed appears only in gymnosperms , though very much sooner than plants such(prenominal) as miadesmiya and lepidokarpon . dissimilar seed Lycopodiales megasporangy in seed plants surrounded by a particular(a) preventative sink in called integument . He knows sort of a unalike strain than the scatter or megasporangiev miadesmii lepitokarbona .\nMegasporangy with the adjoin entegumentom called ovules or ovules . Its rightfully the germ of the seed from which the seed develops after(prenominal) impregnation .\nPollen grains all sagovnikovyh micro , generally , boat-shaped and fork out one on the distal side of the furrow.