Starch is mainly manufactured by

The vertical section of a dorsoventral leaf through the lamina shows three main parts namely,epidermis,$A$,and vascular system. The epidermis,which covers the upper surface is $B$ and the lower surface is covered by $C$ of the leaf. Choose the correct combination of $A$,$B$,and $C$.

Identify the internal structure of the plant organs shown in the image below.

$Potamogeton$ possesses:

Stomata are present in equal numbers on both surfaces of the leaf in:

Assertion :- Vascular bundles of dorsiventral leaves are dissimilar in size.
Reason :- The thickness of veins vary in dorsiventral leaves.