Solution:
Apple snail (Mollusca) has a file-like rasping organ called radula in its oral cavity.
Sea walnut (Ctenophora), brittle star (Echinodermata) and king crab (Arthropoda) lack radula.
ZoologyA file-like rasping organ called radula is present in the buccal cavity of
A file-like rasping organ called radula is present in the buccal cavity of
