Q. Which one of the following is the correct difference between Rod Cells and Cone Cells of our retina? (Feature : Rod Cells | Cone Cells)
A) Distribution : More concentrated in centre of retina | Evenly distributed all over retina
B) Visual acuity : High | Low
C) Visual pigment contained : Iodopsin | Rhodopsin
D) Overall function : Vision in poor light | Colour vision and detailed vision in bright light
Explanation
[Solution from source] Rods contain rhodopsin and handle twilight (scotopic) vision, while cones handle colour and sharp daylight (photopic) vision. Cones, not rods, are packed in the fovea and give high acuity, so any option that swaps the pigments or puts rods in the fovea is wrong. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.