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JAMB Biology 1985 Question 23

Question 23

Respiration

Identify which of the following are characteristics of the vertebrate respiratory surface. 1. Moist 2. Vascularized 3. Semipermeable 4 Freely permeable 5. Dry

  1. A.1,2,3
  2. B.1,2,5
  3. C.2,3,5
  4. D.2,4,5
  5. E.1,3,5.
Show the answer and explanation

Answer: A (1,2,3)

Explanation

Gases must dissolve in water before they can diffuse, so respiratory surfaces are moist. They are also thin and permeable, and well supplied with blood vessels to carry the gases away.