What is peculiar about the circulatory system of urochordates
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Answer:Blood vascular system is open. Heart is simple, tubular and ventral, enclosed in a pericardial cavity. The heart is unusual because it periodically reverses the direction in which it pumps blood. Blood contains cells but not erythrocytes.
Explanation:Circulatory System: Tunicates have an open circulatory system. Blood flows through large tissue spaces or blood channels in the tissues. They have a heart but it is a simple tube with walls that contract to force the blood through it.
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