Question

Differentiate between coleoptile and coleorhiza.

Answer 1

	Coleoptile	Coleorhiza
1.	The epicotyl-bearing shoot apex and leaf primordia are enclosed in a foliar structure called the coleoptile.	The radical and root cap are enclosed in a sheath called the coleorhiza.
2.	Coleoptile has a terminal pore for the emergence of the first leaf.	Coleorhiza is a solid structure.
3.	It protects the plumule during emergence from the soil.	It does not protect the radicle during its passage into the soil.
4.	It grows much beyond the grain.	After emergence from grain, it stops growing.
5.	Coleoptile, after emergence from soil during germination, becomes green and does photosynthesis.	Coleorhiza does not come out of the soil. It remains non-green.