Which is incorrect?
A. Presence of non-respiratory air sacs increases efficiency of respiration in birds
B. In insects, circulation body fluids serve to distribute oxygen to tissues
C. Principle of counter-current flow facilitates efficient respiration in gills of fishes
D. Residual air in lungs slightly decreases the efficiency of respiration in mammals
Answer:B
Which is incorrect?
A. Presence of non-respiratory air sacs increases efficiency of respiration in birds B. In insects, circulation body fluids serve to distribute oxygen to tissues C. Principle of counter-current flow facilitates efficient respiration in gills of fishes D. Residual air in lungs slightly decreases the efficiency of respiration in mammals