Multiple Choice
The circulatory systems of bony fishes, rays, and sharks are most similar to ________.
A) those of birds, with a four-chambered heart
B) the portal systems of mammals, where two capillary beds occur sequentially, without passage of blood through a pumping chamber
C) those of sponges, where gas exchange in all cells occurs directly with the external environment
D) those of humans, where there are four pumping chambers to drive blood flow
Correct Answer:
Verified
Correct Answer:
Verified
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