Multiple choice Cyst formed in echinococcus is known as tetra cyst meta cyclic cyst hydatid cyst None of these Reveal answer Fill a bubble to check yourself C Correct answer Explanation Hydatid disease in man is caused mainly by infection by the larval stage of the dog tapeworm Echinococcus granulosus. Cyst formed in echinococcus is known as hydatid cyst.