Q. 245.0( 2 Votes )

The animals having blood-filled coelomic cavity belongs to phylum:
A. Arthropoda

B. Mollusca

C. Annelida

D. Echinodermata

Answer :

The blood is in the coelom of animals having an open circulatory system. In such type of circulatory system, blood flows into a body cavity (coelom) and not in the blood vessels.

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