internal structure OF isobilateral leaf vascular bundle OF leaf,secondary growth

In the isobilateral leaf

Vascular bundles of are

vascular bundles occur in a leaf

The stomata in an isobilateral leaf

In a dorsiventral leaf, the vascular bundle is

isobilateral leaf is characterised by

In the leaf vascular bundles are found in the

Number of vascular bundles in a leaf-vein of dicot

Assertion: Monocotyledonous and dicotyledonous plants shownmarked variation in their internal structures.They differ in type , number and location of vascular bundles Reason: The secondary growth occurs in most of the dicotyledonous roots and stems and it increases the girth (diameter ) of the organs by the activity of the vascular cambium and the cork cambium