Which of the Following is a Diploblastic Phylum of Aquatic

Question

Which of the following is a diploblastic phylum of aquatic predators?
A) Cnidaria
B) Annelida
C) Mollusca
D) Arthropoda
E) Echinodermata

Accepted Answer

Only Diploblastic phylum is Cnidaria, which includes aquatic predators such as jellyfish and sea anemones. Annelida, Mollusca, Arthropoda, and Echinodermata are all triploblastic phyla.