Question

1) what is the primary function of rod cells?

a) convert light waves into action potential

b) high sensitivity for detecting light waves

c) detect fine detail and color

d) visual accommodation

2. What is the primary function of cone cells?

a) convert light waves into action potential

b) high sensitivity for detecting light waves

c) detect fine detail and color

d) visual accommodation

3. Why did the American flag (red, white and blue) appear after staring at the flag in blue-green, yellow and black?

a) The rods were fatigued so the black stripes became white

b) The blue cones, green cones, and the rods were fatigued so only the red cones could respond to the white light

c) The red cones were fatigued so the stripes appeared red

d) The cones were fatigued so only the rods and red cones could respond to the white light

Answer 1

Rod cells are photoreceptors present in the retina of the eye and they function in less intense light than cone cells.
They are involved in dim light(high sensitivity) instead bright daylight in case of cone cells.
Type of vision is black and white in rod cells and coloured in cone cells.
Colour sensitivity of cone cells is red, green and blue.


Thus the answer is b) high sensitivity for detecting light waves, for question 1) and
c) detect fine detail and color for question 2)

Question 3)
After staring at the flag long enough the receptor cells which are responsible for sensing color(cones) that was visible get fatigued :
b) The blue cones, green cones, and the rods were fatigued so only the red cones could respond to the white light