Which one of the following kinds of animals are triploblastic? (a) Flatworms (b) Sponges (c) Ctenophores (d) Corals
Option A Triploblastic is a condition which describes an animal having a body composed of three embryonic germ layers : the ectoderm, mesoderm and endoderm. Most multicellular animals belonging to phylum platyhelminthes to phylum chordata are triploblastic. Ctenophores, sponges and corals are diploblastic.