Vascular bundles are derived from $(originate\ from)$
Dermatogen
Periderm
Endogenous tissue the procambial strand or plerome
Cortex
Phloem parenchyma is absent in
Initiation of lateral roots and vascular cambium during the secondary growth takes place in these cells.
Which of the following vascular bundles are always open?
Length of petiole increases due to division of