Which of the Following Statements Comparing Respiration in Fish and in Mammals

question 45

Multiple Choice

Which of the following statements comparing respiration in fish and in mammals is correct?

• A)The respiratory medium for fish carries more oxygen than the respiratory medium of mammals.
• B)A countercurrent exchange mechanism between the respiratory medium and blood flow is seen in mammals but not in fish.
• C)The movement of the respiratory medium in mammals is bidirectional, but in fish it is unidirectional.
• D)In blood, oxygen is primarily transported by plasma in fish, but by red blood cells in mammals.
• E)The cells that carry out gas exchange in fish are exposed to an aqueous environment, but this is not true for mammals.

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