yes
The planaria class is Turbellaria
planeriacomes under kingdom animalea
lymphokines
sp refers to a planaria where the actual species is undetermined...or sometimes because several species of planaria have similar appearance or behavior and have been used in a study.
yes
Usually a planaria regeneration experiment involves cutting the planaria into different parts. The head can be separated from the tail or the planaria can be cut lengthwise, etc. After cutting the planaria, it will be observed for few days noting how the organism regenerate its lost body parts. Read more on planaria regeneration on t he link provided below.
Planaria prefer dark environments
Your immune system or your live, but you have to have healthy liver to filter out all your diseases.
Depression lowers everyone's immunity. Everything is depressed, not just the mood.
Respiratory and Immune Systems
Respiratory and Immune Systems
The immune system