Coleorhiza is
a)	Lower end of embryonal axis in monocot
b)	Lower end of embryonal axis in dicots
c)	Lower end of embryonal axis in potato family
d)	Lower end of embryonal axis in monocot

(a)

Lower end of embryonal axis in monocot.

Embryos of monocotyledons possess only one cotyledon. In the grass family the cotyledon is called scutellum that is situated toward the one side (lateral) of the embryonal axis. At its lower end, the embryonal axis has the radical and root cap enclosed in an undifferentiated sheath called coleorhiza.

The portion of the embryonal axis above the level of attachment of scutellum is epicotyl. Epicotyl has a shoot apex and few leaf primordial enclosed in hallow structure the coleoptile