Insects like cockroach and silverfish have which of the following respiratory pigments?

Match the following columns:

Column-$I$ (Organisms)	Column-$II$ (Respiratory Organs)
$P$. Fishes	$I$. Lungs
$Q$. Reptiles,Birds,Mammals	$II$. Gills
$R$. Amphibians like frogs	$III$. Lungs and moist skin

Assertion : Blood is coloured in the insects.
Reason : Insect blood has no role in $O_2$ transport.

If a fish is taken out of water,it dies immediately because...

Which of the following is a simple respiratory organ?

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.