Archive | Gametophytes

Megasporogenesis and Development of the Female Gametophyte! The ovule or the megasporangium develops as a small protuberance of the placental tissue. In the very young ovule a single hypodermal cell is differentiated as the archesporium (Fig. 411 A). This archesporium cell may or may not cut off some parietal cells and then becomes the megaspore mother cell (Fig- 411B). The [...]