Why Planarians Are Good Organisms

A planarian is free-living flatworm that lives in fresh water. Planarians are organisms that live in freshwater. Planarians are part of the metazoan phylum. Animals in the metazoan like jellyfish have the ability to regenerate (Raymond 511-512). Planarians are closely related to animals like jellyfish and starfish. These animals shared the same special ability to regenerate; starfish are able to regenerate their arm when it is cut off. Jellyfish are able to regenerate their stinger when cut off (Li et al.,). Planarians have the ability to regenerate. Planarians are able to regenerate because they have cells called neoblasts that are able to respond to the injury and repair them by regenerate them at the spot of the injury. They produce cells at the spot of the injury (Galbraith & Newmark 37).
If they were cut in half then they would regenerate a whole new tail in the matter of days or if someone cuts of their head then they will make a whole new head. There are no restrictions on cutting a planarian because their whole body can regenerate. That is why planarians are good animals are good organisms to study, according to Galbraith & Newmark, they said, “The capacity of planarians to regenerate all missing body parts after wounding makes them exceptional model in which to study robust,” (Galbraith & Newmark 42). Planarians can be cut in any directions and it is cool organism to study. Kinesis is the planarian is moving to the response of their environment and no is going towards something directly. Taxis is when the planarian moving to a specific direct object like