Free living example of Platyhelminthes is?

Explanation

Option Ais correct.Yes, Dugesia is a free-living example of Platyhelminthes. Platyhelminthes are a phylum of animals that includes flatworms. Flatworms are invertebrates, which means they do not have a backbone. They are also triploblastic, which means they have three germ layers in their embryos. There are two main classes of Platyhelminthes: Turbellarians and Trematodes. Dugesia is a type of Turbellarian, which are free-living flatworms. Dugesia are found in freshwater habitats, such as ponds and streams. They are typically small, measuring only a few centimeters in length. They have a flattened body with a smooth, slippery surface. Dugesia are carnivores, and they eat small invertebrates, such as insects and worms. They have a simple digestive system that consists of a mouth, a pharynx, and an intestine.