Question

how reproduction preform in earthworm​

Answer 1

Earthworms are simultaneous hermaphrodites, meaning worms have both male and female reproductive organs. During sexual intercourse among earthworms, both sets of sex organs are used by both worms. If all goes well, the eggs of both of the mates become fertilized.

Answer 2

earthworm perform sexual reproduction. the male gamate fuse with female gamate and produce earthworm.

it's a normal process like humans.

hope it helps