Question

what kind of organisms are called immortal?

Answer 1

Hydra: Hydra is a fresh water organism, belonging to Cnidaria phylum. They are naturally regenerative and are biologically immortal. They have the capacity to regenerate their damaged parts and do not undergo senescence.


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Answer 2

Immortal species are those that cannot die.

Biologically there exists such organismi.e hydra whose scientific name is cnidaria Phylum