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a
1
b
2
c
3
d
4
answer is C.
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Detailed Solution
Setae are present in Annelida and they help in locomotion.Comb plates are found in Ctenophora. They help in locomotion.Cnidocytes are the cells of Cnidaria and they participate in defense, food capture and anchorage.Proboscis gland in hemichordates helps in excretion.