EVERYDAY SCIENCE

Detailed explanation-1: -In a monocot seed, the lower part of the axis is the radicle, covered by a sheath called coleorhiza (root sheath). The upper part is known as plumule which is covered by a sheath called coleoptile .

Detailed explanation-2: -The coleorhiza, coleorrhiza or root sheath is a protective layer of tissue that surrounds the radicle (the embryonic primary root) in monocotyledon seeds.

Detailed explanation-3: -In monocot embryo, radicle is enclosed in coleorhiza and plumule is enclosed in coleoptile.

Detailed explanation-4: -Coleorhiza. The embryo consists of a single cotyledon, called scutellum, a radicle and plumule. Protective layer of plumule is called coleoptile and that of radicle is called coleorhiza.

Detailed explanation-5: -Radicle is covered by root cap and outer sheath called coleorhiza. Coleorhiza produces seminal roots to help in absorption of water.