Monocotyledonous embryo:-

• They possess only one cotyledon.
• In the grass family the cotyledon is called scutellum. It is situated lateral to the embryonal axis. At its lower end, the embryonal axis has the radicle and root cap enclosed in coleorrhiza (an undifferentiated sheath).
• The portion of the embryonal axis above the level of attachment of scutellum is the epicotyl. It has a shoot apex and a few leaf primordia enclosed in coleoptile (a hollow foliar structure).