What type of circulatory system is found in cephalopods and in molluscs?
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Cephalopods and molluscs have a closed circulatory system with three hearts because open circulatory system is not efficient enough for octopi and squids for faster movement. Their coelom is like a bag that surrounds their hearts. The first two hearts, gill hearts (branchial hearts) moves blood through the gill's capillaries whereas, the reminding heart, systemic heart, provides the rest of the body with oxygenated blood.
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Answer:
closed Type
Explanation:
Diversity. The cephalopods are a diverse class of mollusks (a group that also includes snails and bivalves) that emerged during an explosion of animal diversity in the oceans during the Cambrian period, over 500 million years ago (mya).
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