What is the evolutionary advantage of closed circulatory system over open system

Question

What is the evolutionary advantage of closed circulatory system over open system? A. Open systems are subject to contamination from the environment B. Blood pressure is higher in open systems. C. Blood in closes systems can be shunted where it is needed. D. Blood loss is greater in open systems. E. A and D only. TRUE/FALSE: IF TRUE SHADE A, IF FALSE SHADE B Leaves are broad and thin to minimize their absorption of oxygen. Xylem may transport water and materials in either direction depending on where the source and sink are. Transpiration affects the movement of water into roots. Water can hold oxygen than air can Fruits are expanded anthers. Sieve tube members are found in xylem Book lungs are found in crustaceans and mollusks, while external feathery gills are found in Arachnids. Leukocytes help stop blood loss from wounds. The heart of an adult amphibian three chambers. Nerve fibers conduct contraction signal throughout the heart. The contraction of the heart is known as ______ This vein collects blood from the lower body and carries it to the heart:_____ This structure initiates heart contraction:______

Explanation / Answer

ANSWER:

30) Blood loss is greater in open systems

31) B

32) A

33) A

34) B

35) B

36) B

37) B

38) B

39) A

40) B

41) systole

42) pulmonary vein

43) Cardiac muscle

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