Question

Comman features between planarian and hydra

Answer 1

both have regeneration power

Answer 2

Answer:

A planarian is one of many flatworms of the class Turbellaria.[1][2]

Planaria are common to many parts of the world, living in both saltwater and freshwater ponds and rivers. Some species are terrestrial and are found under logs, in or on the soil, and on plants in humid areas.

Hydra is a genus of small, fresh-water organisms of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions.[2][3] Biologists are especially interested in Hydra because of their regenerative ability — they do not appear to die of old age, or indeed to age at all.