Skin is an accessory organ of respiration in

Which of the following are the respiratory organs of insects?

Respiratory exchange in seeds occurs through

Choose the correct option by matching the organisms in Column-$I$ with their respective respiratory organs in Column-$II$.

Column-$I$	Column-$II$
$(p)$ Sponges	$(I)$ Through tracheal tubes
$(q)$ Insects	$(II)$ Through lungs
$(r)$ Molluscs	$(III)$ Vascularized gills
$(s)$ Reptiles	$(IV)$ Simple diffusion over their entire body surface
	$(V)$ By their moist cuticle

Find the correct sequence for $p-q-r-s$.

Select the correct option regarding the respiratory organs in different animals:

Respiratory organs in aquatic arthropods like crayfish,prawn and molluscs like $Unio$ are