Which animals can undergo complete regeneration?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Planaria (flatworms) and Hydra are classic examples of animals capable of complete regeneration. These organisms can regenerate entire bodies from small fragments. If a planaria is cut into multiple pieces, each piece can develop into a complete organism with all necessary organs and structures. This remarkable ability is due to the presence of specialized stem cells that can differentiate into any cell type needed for regeneration. Starfish also show significant regenerative abilities, though the extent varies by species.
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