Question
Biology Question on Kingdom Animalia
Which of the following endoparasites of humans does show viviparity
A
Trichinella spiralis
B
Ascaris lumbricoides
C
Ancylostoma duodenale
D
Enterobius vermicularis
Answer
Trichinella spiralis
Explanation
Solution
Trichinella spiralis, a nematode parasite copulates in intestine, after which males dies and females produces larvae which enters into the blood circulation to reach the muscles. The production of larvae indicates vivipary. Ancylostoma, Enterobius and Ascaris are all egg laying endoparasites.