Jellyfish, corals, and hydras belong to the group of animals called cnidarians.
The main characteristic of this group is that all of its members possess specialized cells called cnidocytes which often produce venom and have a role in capturing the animals prey.
Mitochondria is the powerhouse of the cell
Hope this helped
There is no answer ,you wrote the answers with the question
I think its B but I'm not sure .. sorry
