Which of the following is not one of the reasons that closed circulatory systems are more efficient than open circulatory systems ? (a) Closed systems rely exclusively on simple diffusion for transport, whereas open systems rely on pumping mechanisms . (b) Transport within closed systems is more rapid than in open systems (c) Blood can easily be directed to specific areas in closed systems, but not in open systems (d) Closed systems operate better under higher pressure than do open systems.
Option A.The closed circulatory system is more efficient as the blood flow can be regulated and the blood flow is quite rapid in the closed circulatory system. The open circulatory system is less efficient as the blood flow cannot be regulated and the blood flow is slow in an open circulatory system.
