Question

In Amphibians and most reptiles oxygenated blood of left atrium and deoxygenated blood of right atrium get mixed up in single ventricle which pumps out mixed blood. This kind of circulation is
(a) Partial double circulation
(b) complete double circulation
(c) Single circulation
(d) open circulation

Answer 1

open circulation

hope it's help

Answer 2

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OPTION = D.

Open Circulation