Question

Cotyledon of maize grain is called:

• A. Plumule
• B. Coleorhiza
• C. Coleoptile
• D. Scutellum

Answer 1

The correct option is D Scutellum

In maize grain, the embryo is small and situated in a groove at one end of the endosperm. It consists of one large and shield shaped cotyledon known as scutellum and a short axis with a plumule and a radicle. The plumule and radicle are enclosed in sheaths which are called coleoptile and coleorhiza.

Thus the embryo in maize grain consists of a single cotyledon called a scutellum, a radicle, and a plumule.

The radicle lies towards the pointed side of the embryonic region of the seed. It is covered by a protective sheath called coleorhiza. The plumule is located towards the upper side of the embryonic region opposite to radicle. It is also enclosed in a protective sheath known as coleoptile.

So, the correct answer is "option d"