Examine the diagram of the two cell types A and B given below and select the correct option.

Options

A. cell A is the rod ccell found venly all over retina
B. cell A is the cone cell more concentrated in the fovea centralis
C. cell B is concerned with colour vision in bright light .
D. Cell a is senstive to low light intestities

Answer

b

Explanation

Cone cell is one of two types (other is rod) of light sensitive cells in the retina of the eye. The human retina contains 6-7 million cones which function best in bright ligh tand are essential for active vision (receiving a sharp accurate image). The are aof retina called the fovea contains the greatest conentration of cone. Cones can also distinguish colours. There are 3 types of cone, each sensitive to the wavelength of a different primary colour red, green of blue.