Q. Megasporophyll of gymnosperms is homologous to _________ of angiosperms.
Solution:
All Gymnosperms are heterosporous, and produce microspore and megaspore. The megaspore is produced in the megasporangium, which are borne on the megasporophyll. The spirally arranged cluster of megasporophylls is called female strobilus or female cone.
The megasporophylls in the female strobili contain ovules, or the megasporangium. Thus, the carpels of Angiosperms are equivalent to megasporophylls of Gymnosperms.
The megasporangium (or ovule) is unitegmic in most Gymnosperms, but bitegmic in Gnetum and most Angiosperms.
The megasporophylls in the female strobili contain ovules, or the megasporangium. Thus, the carpels of Angiosperms are equivalent to megasporophylls of Gymnosperms.
The megasporangium (or ovule) is unitegmic in most Gymnosperms, but bitegmic in Gnetum and most Angiosperms.