Annelida, along with earthworms
mutalism
sealoid
They use them to clean
Yes
In the life cycle of the round worm, a very early life stage occurring within the uterus of the female round worm.
In the life cycle of the round worm, the second stage of life, sometimes considered the "adolescent" stage.
I only know one type of worm that is poisonous and it is called the Bristle worm.
mutalism
In the life cycle of the round worm, a protective, walled-off capsule in which the larvae lie dormant.
Kingdom: Anamalia Phylum: Annelida Class: Polychaeta
yes the root worm life cycle is annual which means it reproduces and then dies every year it does this to keep the root worm population stable. a quick fact scientist realeased root worms into the wild with 3 year life spans which was an unusual experiment but it worked and now many root worms live 3 years.