Question

Why some animals are called flatworms? To which phyla of kingdom animalia do these organism belong?

Answer 1

Platyhelminthes very commonly known as flatworms or tapeworms, these animals are soft-bodied invertebrate animals. ... It is because of this parasitic nature that they do cause some amount of trouble for the host animal. A few species belonging to this phylum can be a major cause of certain diseases.

Answer 2

➡Around eighty percent of the flatworms are parasitic in nature, while a few free-form flatworms are also present. The free-living species are scavengers or predators. The parasitic species feed on the tissues of the host organism in which they live. The animals in this phylum have a diverse range in size.