A) Mollusca
B) Echinodermata
C) Coelenterata
D) Ctenophora
Correct Answer: D
Solution :
The ctenophora is a small phylum of marine animals, which are commonly known as comb jellies or sea walnuts. The phylum takes its name from two Greek words, ketos = comb and phoros = bearing, as the animals possess eight comb like for locomotion.
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