Question

Inside pig, hexacanth larva gives rise to
(a) Cercaria
(b) Bladder Worm
(c) Cysticercus
(d) Both (b) and (c)

Answer 1

Hint: The structure is a small, sac-like vesicle that looks like a bladder; and develops in the muscles of the intermediate hosts such as pigs and transmitted to humans when their infected meats are eaten.

Complete answer:
-An immature form of a tapeworm, which lives in the flesh of the secondary host is called a bladder worm. Further development is paused until it is eaten by the primary host.
-When raw or undercooked pork or beef that is contaminated with cysticerci is eaten by humans, the larvae grow into adult worms inside the human intestine.
-Specifically for the pork tapeworm, under certain circumstances, the eggs can be accidentally eaten by humans through contaminated foodstuffs.
-In such cases, the eggs get hatched inside the body, generally moving to the muscles as well as inside the brain.
-Such brain infection can lead to a serious medical condition known as neurocysticercosis. This disease is the leading cause of the acquired epilepsy.
-The pigs can become exposed to infective larvae by ingestion, skin penetration, and ingestion of infected earthworms.

So, the correct answer is,'Cysticercus'.

Note: -One worm can produce large numbers of eggs and the eggs can be mechanically spread by flies, rain, and wind.
-Goats and pigs are also affected by bladder worm. Affected livers, along with other affected offal, are trimmed.
-Infection occurs in and around the kidneys, so the eggs are passed in the urine.