In which plants are pneumatophores found?

Match the following columns:

Column-$I$	Column-$II$
$P$. Stilt root	$I$. Sweet potato
$Q$. Prop root	$II$. Banyan tree
$R$. Food storage root	$III$. Rhizophora
$S$. Respiratory root	$IV$. Maize/Sugarcane

Pneumatophores or breathing roots occur in

The smallest region of the root is:

Identify the correct terms for the following analogy questions:
$(i)$ In wheat : Fibrous root :: In Banyan tree : ..........
(ii) In Rhizophora : Respiratory root :: In Turnip : ........

What are the main functions of the root system?