In plants gaseous exchange occurs through ?

In Nereis, gaseous exchange occurs through

Choose the correct answer and write its letter in the brackets: Massive amounts of gaseous exchange occurs through the

in a plant organ covered by periderm , the stomata are absent. Gaseous exchange occurs thorugh

In insects, respiratory gas exchange occurs through

In insects, respiratory gas exchange occurs through

In insects, respiratory gas exchange occurs through

In insects, respiratory gas exchange occurs through

How does gaseous exchange occur in lungs ?