In which of the following is the skin an accessory respiratory organ?

In which animal,does the diaphragm have no role in respiration?

In crustaceans,respiration occurs through ..........

Which animal among the following respires via buccal cavity,moist skin and lungs?

Amphibians respire through ........

Among vertebrates,...$A$... use gills whereas reptiles,birds and mammals respire through the ...$B$... Amphibians like frogs can respire through ...$C$... also. Mammals have a well adapted respiratory system. Select appropriate choice for the blanks $A, B$ and $C$ to complete the given $NCERT$ statement.