Bladder worm is the larva of (a) Liver fluke (b) Tape worm (c) Nereis (d) Mussel
Option b) Cysticercus is a scientific name given to the larval tapeworms belonging to the genus Taenia. It is a small, sac-like vesicle resembling a bladder. So, it is also known as bladder worm. It normally develops from the eggs, which are ingested by the intermediate hosts such as pigs and cattle. The tissue infection is called cysticercosis. Inside such hosts, they settle in the muscles. When humans eat raw or undercooked pork or beef that is contaminated with cysticerci, the larvae grow into adult worms inside the intestine.