A) Cnidaria - Bonellia, Physalia, Aurelia
B) Platyhelminthes - Planaria, Schistosoma, Enterobius
C) Mollusca - Loligo, Teredo, Octopus
D) Porifera - Spongilla, Euplectella, Pennatula
Correct Answer: C
Solution :
Loligo, Teredo and Octopus are the members of phylum Mollusca. Loligo is commonly called squid or sea arrow and is gregarious, fast swimmer in the open water of the sea and is carnivorous, feeding on crabs and fishes. Teredo or shipworm is a marine bivalve which has small anterior shell and long slender body with a small foot functioning as adhesive structure. Octopus (levil fish) is found at the bottom of the sea. It is nocturnal and feeds on crabs, fishes and other mollusc.
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