Open type of blood vascular system, presence of auricle and ventricle – McqOptions

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1.	Open type of blood vascular system, presence of auricle and ventricle and presence of haemocyanin respiratory pigment are the characters of
A.	Mollusca
B.	Arthropoda
C.	Echinodermata
D.	Annelida
Answer» B. Arthropoda

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