Differentiate between: (a) hypocotyl and epicotyl, (b) coleoptile and coleorhiza, (C) integument and testa , (d) perisperm and pericarp.

Explanation

(a) The portion of embryonal axis above the cotyledon is called epicotyl, while the portion of The embryonal axis below the cotyledon is called hypocotyl.
(b) Coleoptile is a conical protective sheath over the plumule, while coleorhiza is a protective sheath over the root tip in monocotyledonous seeds.
(c) Integument is the protective covering of ovule, while testa is the protective outer seed coat of the seed developed from the outer integuments.
(d) Perisperm is the residual persistent nucellus, while pericarp is the fruit wall derived from the ovary wall.