Open circulatory system is present in

Biology Body Fluids and Circulation Circulatory Pathways and Human Circulatory System Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

arthropods and mammals

molluscs and aves

arthropods and molluscs

mammals and aves

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Open type of circulatory system is found in Arthropoda, Mollusca and Hemichordata.

In an open type of circulatory system, the blood flows through open sinuses and blood vessels are poorly developed.

The members of Annelida and Chordata have a closed circulatory system wherein the blood flows through closed blood vessels.

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