HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Arthopods and molluscs
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Annelids and Chordates
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Annelids and arthopods
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Fishes and molluscs
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Detailed explanation-1: -In contrast to a closed system, arthropods (including insects, crustaceans, and most mollusks) have an open circulatory system. In an open circulatory system, the blood is not enclosed in the blood vessels, but is pumped into a cavity called a hemocoel.
Detailed explanation-2: -Molluscs and arthropods both have an open circulatory system.
Detailed explanation-3: -Assertion :Open circulatory system is found in most arthropods. Reason: Arthropods contain haemolymph which directly bathes internal tissues and organ.
Detailed explanation-4: -Invertebrates like insects, spiders, aquatic arthropods and molluscs have circulatory systems that do not contain blood vessels. In these open circulatory systems, a fluid called hemolymph circulates in the interior of the body in direct contact with the tissues.
Detailed explanation-5: -Annelida and Coelenterata have closed circulatory systems whereas Arthropods and Mollusca have an open circulatory system.