In the given diagram of a leaf,what are $P$ and $Q$?
$P \quad Q$

In sweet pea,the tendrils are modified:

Leaves arise from which part of the plant?

When the incision in a leaf is more than halfway towards the midrib,it is called:

Given below are two statements:
Statement-$I$: Leaves originate from shoot apical meristems.
Statement-$II$: Leaves are arranged in acropetal order.
In the light of the above statements,choose the correct answer from the options given below:

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