Which of the following vascular bundles are always open?
Radial
Collateral
Bicollateral
Concentric
Duramen is present in
While eating peach or pear it is usually seen that some stone like structures get entangled in the teeth, what are these stone like structures called ?
'Protoderm' and 'procambium' terms were coined by
Plant tissues, which are actively growing have water content of
$P -$ protein is found in