The only phylum bearing pseudocoelom is

Assertion $A$: In $Aschelminthes$, the juvenile form resembles the adult.
Reason $R$: Indirect development is observed in $Aschelminthes$.
Which option is correct for Assertion $A$ and Reason $R$?

In $Ascaris$,the $3^{rd}$ moulting takes place in:

$Ascaris$ completes its life cycle in

In animals of the phylum Aschelminthes,which layer is present in the form of scattered pouches?

$Wuchereria bancrofti$,the filarial worm that causes elephantiasis,belongs to which phylum?