Animal KingdomHard
Question
Closed circulatory system occurs in
Options
A.snail
B.cockroach
C.cuttle fish
D.All of these
Solution
Closed circulatory system occurs in cuttle fish, ie, Sepia, cephalopods are the only molluscs with a closed circulatory system. They have two gill hearts (also known as bronchial hearts) that move blood through capillaries of the gill. A single systemic heart pumps the oxygenated blood through rest of the boody .
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