An open circulatory system with poorly develo | vedclass

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(C) In an open circulatory system,the blood is pumped out of the heart into body cavities called sinuses or lacunae,rather than being confined within

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Arthropoda

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(C) In an open circulatory system,the blood is pumped out of the heart into body cavities called sinuses or lacunae,rather than being confined within vessels. This system is characterized by poorly developed arteries and veins. Among the given options,the phylum $Arthropoda$ (which includes insects,spiders,and crustaceans) is well-known for possessing an open circulatory system. $Coelenterata$ and $Platyhelminthes$ lack a circulatory system entirely,while $Porifera$ rely on a water transport system.

An open circulatory system with poorly developed arteries and veins is a characteristic feature of which phylum?

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