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.
The basal disk of a hydra is located at its base, serving as the attachment point to the substrate or surface it inhabits. This disc-shaped structure allows the hydra to anchor itself securely, enabling it to remain stationary while feeding and interacting with its environment. The basal disk also plays a role in locomotion, as the hydra can use it to glide or move by contracting and expanding.
Probably not the starter.
Hydra or Hydra
The adult hydra attaches to a substrate using its basal disc, which secretes a sticky substance to help it adhere in place. It extends its tentacles to capture and immobilize prey, which it then ingests through its central mouth opening.
The tentacles of a hydra are the most sensitive because they are equipped with specialized cells called cnidocytes, which contain stinging structures called nematocysts. These cells allow the hydra to detect and capture prey, as well as sense changes in its environment. The high concentration of nerve cells in the tentacles enhances their sensitivity, enabling the hydra to respond quickly to stimuli. This adaptation is crucial for both feeding and defense.
You take 5 big deep breaths and tap your foot constantly
Hydra is an animal. Animals never have chloroplasts
In hydra -_-
hydra
A hydra does not have cephalization.