SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Segmented
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Closed
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Open
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Continuous
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Detailed explanation-1: -Annelids possess a closed circulatory system.
Detailed explanation-2: -Explanation: Annelida and Coelenterata have closed circulatory systems whereas Arthropods and Mollusca have an open circulatory system.
Detailed explanation-3: -In a closed circulatory system, the blood pumped by the heart is always circulated through a closed network of blood vessels. As fluid is regulated in better ways, it is more advantageous. The closed circulatory system is present in Annelids and Chordates.
Detailed explanation-4: -Open circulatory systems work by pumping blood into a hemocoel. The species in the phylum Arthropoda have an open circulatory system. Mollusca have open circulatory systems like a snail, chiton, slug, etc, except for cephalopods which have closed circulatory systems.
Detailed explanation-5: -The earthworm has a closed circulatory system. An earthworm circulates blood exclusively through vessels. There are three main vessels that supply the blood to organs within the earthworm.