Ascariasis - Ascaris
Contaminated water/vegetables/fruits.
Elephantiasis - Filariasis (Wuchaeria Bancroft) Bite by female mosquito vectors.
Detailed:
Two human diseases caused by round worms are :
(i) Ascariasis : Caused by Ascaris lumbricoides. It spreads through contaminated water fruits and vegetables.
(ii) Filariasis: Caused by Wuchereria banuofti and W malayi. It is transmitted by the bite of female Culex mosquitoes.