Which one is not diploblastic?
Sponge
Cnidarian
Nematoda
Tenophora
C.
Nematoda
Diploblastic animals have two primary germ layers ectoderm and endoderm as in Porifera, Coelenterata and Ctenophora. Sponges belong to Phylum- Porifera, Cindarian belongs to Phylum- Coelenterata and tenophora belongs to Phylum- Ctenophora.