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BIOLOGY

JAMB 2024 - Question 6

Biology 2024 JAMB Past Questions - Question 6: Which type of circulation is present in arthropods and mollusks?

Which type of circulation is present in arthropods and mollusks?

A: Double circulation

B: Single circulation

C: Open circulation

D: Open circulation

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Correct Answer

Explanation

Arthropods and mollusks have open circulatory system, because arthropods contain haemolymph which directly bathes tissues and organ. This open system is distinct from closed systems found in vertebrates, where blood is confined to vessels.