Are root directly in contact with water?

Assertion : In cockroach respiratory gases directly comes in contact with the various organs of the body. : Resons : Cockroaches do not have respiratory

Assertion : In cockroach respiratory gases directly comes in contact with the various organs of the body. : Reason : Cockroaches do not have respiratory pigment

The pollen grain is released from the microsporangium and directly come in contact with the opening of ovules in :

The pollen grain is released from the microsporangium and directly come in contact with the opening of ovules in :

Sulphuric acid is manufactured by Contact process : Why H_2SO_4 is not obtained by directly reacting SO_3 with water ?

The surface of the water in contact with the glass wall is

Which of the following burns with an explosion in contact with water and air?

Why in the manufacture of H_2 SO_4 by contact process, sulphur trioxide is not directly dissolved in water ?