What is the main difference between an open circulatory system and a closed one?
A) An open system will have the blood leave the blood vessels and dump into the hemocoel while the closed one will retain the blood within the system.
B) An open system will keep the blood within the blood vessels while the closed one will dump the blood into the hemocoel.
C) An open system will have the blood leave the blood vessels and dump into the lungs or gills while the closed one will retain the blood within the system.
D) An open system will have the blood leave the blood vessels and dump into the lungs or gills while the closed one will retain the blood within the heomocoel.
E) The blood within a closed circulatory system does not contain hemoglobin.

Question

Quizplus · Accepted Answer

The main difference between an open circulatory system and a closed one is how they distribute blood. In an open system, the blood will leave the blood vessels and dump into the hemocoel (a body cavity), while in a closed system, the blood will remain within the closed network of blood vessels. Choice A accurately describes this difference. Choices B, C, and D are inaccurate. Choice E is irrelevant to the question.

What Is the Main Difference Between an Open Circulatory System