Practice question

Megaspores derived via meiosis of diploid megasporocyte inside nucellus megasporangium enclosed within single integument, producing female gametophyte mother tissue ovule inserted on adaxial surface of ovuliferous scales composing seed cones female strobili persistent woody. Single surviving megaspore usually chalazal most proliferates into haploid multicellular gametophyte with archegonia containing egg cell. Pollen cones exclusively generate microspores not megaspores, anthers and stamens define angiosperm male andropetala structures not gymnosperm anatomy. Thus seed cone location ensures protection nutritional provisioning from sporophyte parent, retaining megagametophyte throughout development culminating seed dispersal after fertilization, exhibiting heterospory.