First slide

Circulatory Pathways

Question

Blood pumped by the heart passes through large vessels into sinuses in

Very Easy

A

arthropods and molluscs
B

annelids and chordates
C

fishes and amphibians
D

reptiles and aves

Solution

Open circulatory system is present in arthropods and molluscs in which blood pumped by the heart passes through large vessels into open spaces or body cavities called sinuses.
Annelids and chordates have a closed circulatory system in which the blood pumped by the heart is always circulated through a closed network of blood vessels.

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