Do earthworms fertilize their own eggs?

Answer 1

As the maturity of the female gential organs and the male gential organs differ with time it cannot self fertilize, for example when its first male it can reproduce with other worms but once its clitellum enlarges and produces mucous and become a female its male genitilia will not undergo spermatogenesis.

Answer 2

No, they eggs pass out the ovaries to another worm.

Answer 3

No, Earthworms are asexual meaning that they have both male and female organs, however they do still mate. During mating both earthworms will fertilize each others eggs