Leaflets are called Pinnules in

In Moringa $(Drumstick)$,the leaves are

Leaf base may bear two lateral small leaf-like structures called:

In $Opuntia$ (prickly pear),the leaf spines are a modification of the .......

What is called venation? Describe its types.

Identify the correct terms for the following analogy-based question:
$(i)$ Leaf is attached to the stem by: Leaf base :: The swollen leaf base is called: ............
$(ii)$ In Neem: Pinnately compound leaf :: In Silk cotton: ............