Phylum : Platyhelminthes (Flat worms), its classification and characteristics
multicellular, triploblastic, bilaterally symmetrical. first animals to have organ-system grade of body organization. body is dorsoventrally flattened so called flat worms. size varies from less...
Differences between vertebrates and invertebrates
S.N Vertebrates Invertebrates 1. They have backbone or vertebral column. They do not have backbone or vertebral column. 2. They are the most organized animals...