Jellyfish are composed of cells just like any other organism is.
The stinging cells in a jellyfish are located in it's tentacles.
Jellyfish are single celled organisms.
Jellyfish do not have collar cells. Sponges have collar cells, and yes, they are used for filter feeding.
"jellyfish"
The box jellyfish survives with its venomous stinging cells
Yes.
One cell that a jellyfish has is nematocysts(stinging cells on tentacles).
50000000
More then a billion.
Jellyfish tentacles can over 100 feet long and have stinging cells.
Jellyfish use stinging cells to protect themselves & catch food