The radical and root cap of the embryonal axis are encased in a ________ sheath, which is an undifferentiated sheath.
Coleorhiza sheath
Scutellum sheath
Epicotyl sheath
None of the above
The radical and root cap of the embryonal axis are encased in a coleorrhizal sheath, which is an undifferentiated sheath.
Option 1 is the correct answer.