Multiple choice Animals which belong to the phylum coelenterate are radially symmetrical & triploblastic radially symmetrical & diplobastic bilaterally symmetical & triploblastic bilaterally symmetical & diploblastic Reveal answer Fill a bubble to check yourself B Correct answer Explanation Coelenterates (Cnidarians) are characterized by radial symmetry and a diploblastic body organization (ectoderm and endoderm).