This question was sent to us by Eugene from Moscow. We rephrase the question: where are the new earthworms? In other words, how do they reproduce?
Earthworms reproduce by means of eggs. You must have noticed that sometimes in earthworms on the front end, you can see the bulge - the band:
This band is used for carrying eggs.
Earthworms lay them in the earth in a special cocoons. In optimal conditions, the worm lays such cocoons every 5-7 days!
The cocoon is an oval elastic capsule and resembles a lemon. The color of fresh cocoon - light yellow, ripening brown. The diameter of the cocoons from 2 to 4 mm In each cocoon develops from 2 to 20 eggs. Hatched worms as thin as threads, length 1 mm, But after a week they grow up to 4-7 mm.
How is reproduction in earthworms(this material is for the guys began to study at the school of Zoology; for younger children it may be not very clear due to the complicated terminology).