In plants like Nymphaea which is attached emerged hydrophyte, the stomata are present on
Adaxial $(upper)$ surface of leaf
Abaxial $(lower)$ surface of leaf
On both surface of leaf
None of the above
Amphicribal or hadrocentric vascular bundles are present in the stem of
Tyloses an outgrowth from ray or axial parenchyma cell into the lumen of a vessel, which partially or completely blocks the cavity are present in
Bulli form cells are present in.....
In which of the following, there is no differentiation of bark, sap wood and heart wood