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Question

In cereal grains such as maize, the single cotyledon of the embryo is represented by the

A
coleoptile
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B
coleorhiza
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C
scutellum
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D
prophyll
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Solution

The correct option is C scutellum

In the monocotyledonous embryo such as maize, the single cotyledon present is large and is called the scutellum. It is mostly found in the family Poaceae.

The area of embryo axis between the plumule and cotyledonary node is epicotyl. Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure called coleoptile.

At the lower end of the scutellum, the embryonal axis has the radicle (the portion of the plant embryo that develops into the primary root) and root cap enclosed in an undifferentiated sheath called coleorhiza.

Prophyll is a plant structure resembling a leaf (bracteole) or a leaf-like rudimentary structure (foliar primordium).


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