How is the excretory system of flatworms different from the excretory system of the earthworm?

in earthworms, excretion occurs with the help of excretory tubules, but in flatworms, this occurs with the help of a contractile vacuole.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.