In most unicellular organisms
Alcohol is the product of
Which of the following forms the floor of the chest cavity?
In the given figure, diaphragm is represented by
What happens to the lime water, when we exhale air into it?
Which of the following animals breathe through their skin and lungs?
In fishes gills are the respiratory organs, gills are projections of which of the following parts?
Which of the following statements is not correct?
The function of hair follicles inside the nose is
In man, nasal and oral cavities are separated by