Question

At which stage in the life cycle of Taenia solium, infects the intermediate host?

• A. Hexacanth larva
• B. Oncosphere
• C. Cysticercuslarva
• D. Miracidium

Answer 1

The correct option is B Oncosphere

Taenia solium or pork tapeworm is an endoparasite in the human intestine. The life cycle is complicated with several larval stages. Pigs acquire tapeworm by feeding on garbage and human excreta having oncospheres. Oncospheres are released in the intestines of pigs. The shell dissolves and the hexacanth larva is liberated. Hexacanth larva is activated by bile salts. It reaches muscles and forms encysted bladder worm or cysticercus.

Thus, the correct answer is option B.