Answer:
There are three types of Phyla worms named Platyhelminthes, Nematoda, Annelida. We all people are very familiar with earthworms. There is a different type of animals called worms.
But there phyla are different from others and fit into the category of worms. These worms are generally long, thin and almost without legs. All Phyla are in different size, complexity, and have different body structures.
These three types of worms are also called flatworm, roundworm and the segmented worm. These are invertebrate animals with bilateral symmetry.