Cotyledon of maize grain is called:
plumule
coleorhiza
coleoptile
scutellum
As discussed in
Plant embryo structure -
The embryo consists of a cotyledon and an embryonal axis. The cotyledon is also called scutellum in cereals. The lower end of scutellum is called coleorhiza and upper part of axis is called the plumule which is covered by coleoptile.
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Cereal cotyledon are called scutellum.
Option 1)
plumule
This solution is incorrect.
Option 2)
coleorhiza
This solution is incorrect.
Option 3)
coleoptile
This solution is incorrect.
Option 4)
scutellum
This solution is correct.