Give scientific reason:Colour-blind persons are unable to distinguish

1.	Give scientific reason:Colour-blind persons are unable to distinguish between different colours.
Answer» (1) The cone-shaped cells in the retina of a person respond to colours. This makes the perception of colours possible. (2) In the retina of colour-blind persons, coneshaped cells responding to certain specific colours are absent. Hence, they are unable to distinguish between different colours.

Give scientific reason:Colour-blind persons are unable to distinguish between different colours.

Answer»

(1) The cone-shaped cells in the retina of a person respond to colours. This makes the perception of colours possible.

(2) In the retina of colour-blind persons, coneshaped cells responding to certain specific colours are absent.

Hence, they are unable to distinguish between different colours.