They retract their tentacles into their body stalk.
The Hydra will retract their tentacles into their body stalk on their substrate response. Every cell in the hydra reacts during this response.
Hydra will retract their tentacles into their body stem when touched. This is a response inherent in the plants from many centuries ago. Hydra do not like to be touched and close to protect themselves.
Probably not the starter.
Hydra or Hydra
You take 5 big deep breaths and tap your foot constantly
Hydra is an animal. Animals never have chloroplasts
In hydra -_-
no,hydra have no organ
hydra
A hydra does not have cephalization.
No a hydra is not a fish. A fish is a vertebrate. A hydra is much more primitive.
No a hydra is not a fish. A fish is a vertebrate. A hydra is much more primitive.