Assertion : Most fish when out of water, die of suffocation.
Reason : Atmospheric air contains far less oxygen content than the dissolved oxygen in water.
Assertion : Gill-lamellae in aquatic animals help in exchange of gases
Reason : Each gill lamella carries many blood capillaries.
Assertion : Insects develop a complex system of air tubes called trachea for respiratory purpose.
Reason : Exchange through body surface is not possible in insects.
Respiratory organ of scorpion is
Which of the following is incorrect