Q Which organism has a closed-type circulatory system among the given options?
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Explanation
A closed-type circulatory system is a system in which blood is pumped through a continuous network of vessels. Among the given options, only fish belong to the phylum Chordata which has a closed circulatory system. In contrast, phylum Arthropoda and Mollusca have an open circulatory system. Cockroaches and scorpions belong to the class Insecta phylum Arthropoda, which means they have an open circulatory system. Fishes have a two-chambered heart and a closed circulatory system that pumps blood through the gills to oxygenate it before circulating it through the rest of the body. The closed circulatory system enables fish to have a more efficient and higher-pressure circulatory system than animals with an open circulatory system.
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