Leaf tendrils are found in

Structure of leaf which provides channels of transport for water,minerals,and food materials is called:

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 $Bougainvillea$.

Phyllode of $Acacia$ $auriculiformis$ is considered a leaf modification because:

In $Nepenthes$,the pitcher is a modification of which part of the leaf?

You have heard about several insectivorous plants that feed on insects. Nepenthes or the pitcher plant is one such example,which usually grows in shallow water or in marshy lands. What part of the plant is modified into a pitcher? How does this modification help the plant for food even though it can photosynthesize like any other green plant?