Circulatory system is open type in all of the following except:___________?
Correct answer: D. Cephalopoda
- A. Arthropoda
- B. Gastropoda
- C. Pelecypoda
- D. Cephalopoda
Explanation
Arthropods, gastropods and pelecypods generally have open circulation, but cephalopods have a closed circulatory system in which blood remains within vessels. Students may choose b because gastropods can have more specialized circulation, but their system is still open.
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