Which is a feature of a flatworm?

Here are a couple of features of a flat worm:

. They have soft bodies

. Its scientific name is Platyhelminthes

. There about 20,000 spices of a flat worm

. Flat forms can cause death

. They have ribbon like bodies

. They have know circulatory organs

. They have no respitory organs

. have membranes that enables them to absorb nutriments and oxygen by diffusion