The study of worms causing parasitic infestation in humans is known as:

Which of the following does not belong to phylum-Platyhelminthes?

Parenchymal circulation is found in . . . . . . .

$Taenia \ solium$ is characterized by:

Consider the following characters $:-$
$1.$ Bilateral symmetry
$2.$ Acoelomate
$3.$ Incomplete digestive system
$4.$ Mostly endoparasites
Select the correct group of phylum with its corresponding animal for the above-given characters $:-$

$A$: Cysticercosis is caused by the accidental ingestion of onchospheres.
$R$: Taenia solium is a monogenetic parasite.