Sexual reproduction in the earthworm.. Formation of the cocoon containing the fertilized oocytes after the confluence of two abdominal duodenal tubes with an opposite position in the mating process

1. Two dumplings meet the abdominal lining of the opposite position in the mating process.
2 - secrete mucous materials that form a membrane surrounding the area of intercourse called saddle.
3 - sperm exchange between them.
4. Doddens separate.
5. The mucosa dries to form a ring surrounding the body.
6 - Move this loop to the front to get mature eggs to be vaccinated.
7 - finally separated to be a cocoon containing fertilized eggs, which grow to be one embryo to be a complete animal.