Why the closed circulatory system is more efficient than an open circulatory system?
Advantage of closed circulatory system: (i) Flow of blood is faster in the closed circulatory system as compared to open circulatory system. Sufficiently high blood pressure can be maintained. Blood does not come in contact with the tissues/organs. The volume of blood flowing to a particular tissue/organ can be regulated according to the need. (ii) The blood flows under pressure so that all parts of the body receive blood with equal efficiency. (iii) It transports materials efficiently. (iv) There are checks for the regulation of the amount and speed of blood passing into an organ according to the requirement of that organs.
