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Hydra cells get oxygen through diffusion.
Hydra cells get oxygen through diffusion.
The stinging cells of the Hydra paralyze the daphnia.
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 stinging cells in the hydra is what helps it paralyze its prey. Once it uses its stinging cells to paralyze it, the hydra then uses its tentacles to push into itsslef considering that its only one cell layer thin.
Yes Hydra are unicellular alga chlorella within the cells of the gastrodermis.
hydra
Tentacles.
Hydra have adapted to regrow if part of their body is separated. In an experiment, scientists ran a hydra through a sieve. When the cells were introduce to water, they eventually regrew into fully formed adult hydra.