The swollen lower end of the leaf stalk is known as:

Which one of the following is not an example of developmental heterophylly?

Which plant exhibits heterophylly due to its environment?

The approximate diameter of a Victoria leaf is: (in $m$)

Plasticity can be observed in the leaf of

$A$-Leaves originate from shoot apical meristem and are arranged in an acropetal order.
$R$-They are the most important vegetative organ for photosynthesis.