31.Retina in the eyes acts as a :

32.An adult human being has 16 teeth on each jaw. In each half of the jaws, there are : 1. Three molars 2. Two incisors3. Two premolars 4. One canineThe correct swquence in which these teeth occur starting from the middle and going backwards in each half of the jaw is :

33.Life of RBC in human blood is of :

34.Convex lenses are used for the correction of :

35.Which of the following sets contains foods rich in carbohydrates ?