Question

In this diagram showing the L.S. of an embryo of grass, identify the answer having the correct combination of alphabets with the right p art:

• A. A - Root cap, B - Coleoptile, C - Scutellum, D - Coleorhiza, E - Epiblast, F - Shoot apex
• B. A - Shoot apex, B - Epiblast, C - Coleorhiza, D - Scutellum, E - Coleoptile, F - Radicle
• C. A - Epiblast, B - Scutellum, C - Coleoptile, D - Radicle, E - Coleorhiza, F - Shoot apex
• D. A - Epiblast, B - Radicle, C - Coleoptile, D - Scutellum, E - Coleorhiza, F - Shoot apex

Answer 1

Answer: (D)

The diagram represents a typical monocot embryo. The label A refers to epiblast. This is the remains of the second cotyledon in the monocot embryo. The label B refers to radicle. This is the root cap region. The label C refers to coleoptile. The shoot apex is protected with a shield called as coleoptile. The label D refers to scutellum. There is only one cotyledon and it is called as the scutellum. This is present in one side of the embryonal axis. The label E refers to coleorhiza. The root cap region is shielded with the help of coleorhiza. The label F refers to shoot apex. The shoot apex will develop to form the root.