They don't.
No.
A young immobile jellyfish is called a polyp
An immature jellyfish is called an "ephyra".
ephyra
Yes, they are born with one parent. The parent which I think is the mother lays the eggs and it goes on.
they don't
medusas
A sexually immature jellyfish is called an ephyra.It's called a polyp
It doesn't.
They don't protect their young they have to do it by themselves
Adult jellyfish release eggs into the water.
Eggs.