JAMB - Biology (1988 - No. 4)
The following organisms are hermaphrodites EXCEPT?
snail
Taenia
Schistosoma
Earth worm
Explicació
most land snails are pulmonates and are hermaphrodites.
Unlike all other trematodes, schistosomes are not hermaphroditic but dioecious, forming separate sexes.
Adult worms have elongate tubular bodies, each male having a unique gynecophoral canal (schisto-soma = split body) in which a female worm resides.