Cotyledon of maize grain is called: (NEET 2016 (Phase I))
Answer: (D) Scutellum. A maize grain is a monocot (endospermic) seed whose single, large, shield-shaped cotyledon is the scutellum.
- A.Plumule
- B.Coleorhiza
- C.Coleoptile
- D.Scutellum✓
Correct Answer
(D) Scutellum
Solution & Explanation
A maize grain is a monocot (endospermic) seed whose single, large, shield-shaped cotyledon is the scutellum. The plumule is the embryonic shoot, while the coleoptile and coleorhiza are protective sheaths covering the plumule and radicle respectively — none of these is the cotyledon. So the cotyledon of maize is the scutellum. NCERT Reference: Ch 5, p.67, lines 17-21 — "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 respectively"
