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Vascular bundles in monocotyledons are considered closed because
A
A bundle sheath surrounds each bundle
B
Cambium is absent
C
There are no vessels with perforations
D
Xylem is surrounded all around by phloem
Detailed Solution
In monocots the vascular bundles are conjoint and collateral.
There is no cambium between xylem and phloem, so there is no scope for secondary growth; such bundles are called closed.
There is no cambium between xylem and phloem, so there is no scope for secondary growth; such bundles are called closed.