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

In Filaria,the digestive system is complete,which means ........... .

In $Aschelminthes$,the excretory tube removes body wastes from the body cavity through:

Ancylostoma infection spreads through

Which of the following statements are correct about the life cycle of $Ascaris \; lumbricoides$?
$(A)$. Infective agent - Embryonated egg with $II$ Juvenile
$(B)$. Fertilised eggs containing the unsegmented ovum are passed with faeces
$(C)$. Four moultings of the larva occur: two outside in soil within the egg-shell, one in lungs and one in intestine
$(D)$. Site of location of worm - small intestine.

Write the general characteristics of Aschelminthes.