Secondary growth is absent in
Hydrophytes
Mesophytes
Halophytes
Xerophytes
Tunica corpus theory was proposed by
Closed vascular bundles lack
The cork cambium cork and secondary cortex are collectively called :
In dicot stem, secondary xylem lie towards the ...$A$... and secondary phloem lie towards the ...$B$...
Choose the correct combination of options for $A$ and $B$
Starch is mainly manufacture by