In $Ficus$ $(Rubber\,\, plant)$,the young leaves are protected by reddish structures called bud scales. These are:

Which of the following two are the resultant of stipule modifications?
$I$. Spines in $Ziziphus$.
$II$. Tendrils in $Smilax$.
$III$. Tendrils in $Nepenthes$.
$IV$. Spines in $Argemone$.
$V$. Thorns in $Bougainvillea$.

The expanded part of the leaf is called the .......

In plants like $Nymphaea$,which is an attached emerged hydrophyte,the stomata are present on:

The reticulate venation is commonly found in the leaves of

Which of the following is not a part of a leaf?