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B
plumule
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C
coleorhiza
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D
coleoptile
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Solution
The correct option is A scutellum The single, large, shield-shaped cotyledon of maize grain is called scutellum. It is a characteristic feature of monocot seeds.
Seeds germinate bearing a short axis called plumule and radicle. Plumule is a part of the embryo which develops into a shoot bearing the first leaves. Radicle grows downward and develops into the root system. The plumule and radicle are enclosed in a sheath called coleoptile and coleorhiza, respectively, in monocots.