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Match animals in column I with their respective respiratory structures in column II.

 Column I (Animals) Column II (Respiratory structures)
A. Pigeon                  (i) Book gills
B. Scorpion (ii) Pharyngeal wall
C. Planaria (iii) Lungs
D. Earthworm (iv) Gills
E. Insects (v) Tracheal tubes
F. King crab (vi) Body surface
G. Prawn (vii) Skin
H. Labeo  

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