The nerves through which messages travel from the eyes to brain are

The largest external organ of our body is

The screen in the eyes on which images are formed is

The outer part of the ear is

The organs which help us to hear are _____

 The sense organ which helps us identify colours is 

We can identify sweet taste from  ___ part of the tongue.

 Chameleons can move their eyes in _____ different directions

 To recognize smell snakes use their ___

The sense organ in which the nerve endings are sensitive to heat, cold is