NEET2020ZoologyNeural Control and CoordinationActual
Match the following columns and select the correct option:- Column - I column - II (a) Rods and cones (i) Absence of photoreceptor cells (b) Blind spot (ii) Cones are densely packed (c) Fovea (iii) Photoreceptor cells (d) Iris (iv) Visible coloured portion of the eye
Options
- A( a ) - ( iiii ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iv )
- B( a ) - ( ii ) ,   ( b ) - ( iii ) ,   ( c ) - ( i ) ,   ( d ) - ( iv )
- C( a ) - ( iii ) ,   ( b ) - ( iv ) ,   ( c ) - ( ii ) ,   ( d ) - ( i )
- D( a ) - ( ii ) ,   ( b ) - ( iv ) ,   ( c ) - ( iii ) ,   ( d ) - ( i )
Correct answer
A. ( a ) - ( iiii ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iv )
Step-by-step solution
Parts of the human eye Characteristics Rods and cones Rods and cones are photoreceptor cells found in the retina of an eye. Rods are responsible for scotopic vision, while cones are responsible for the photopic vision and coloured vision. Blind spot The part of the eye, where optic nerves and blood vessels enter and leave the eye is called a blind spot as it has an absence of photoreceptor cells. Fovea The part of the retina, where cones are densely packed is responsible for clear vision is called the fovea. Iris I