Cones can be found across the whole __________ surface, but they are concentrated around the __________, an area at the centre of the retina.

Question

Quizplus · Accepted Answer

Cones are concentrated around the fovea, which is an area at the centre of the retina responsible for detailed vision. Therefore, option C stating that cones are concentrated around the retina and fovea is the correct choice. Option A is incorrect because the cones are not concentrated around the pupil, which is an opening in the eye that regulates the amount of light that enters. Option B is incorrect as cones are not located primarily around the lens, which is a transparent structure in the eye that focuses light onto the retina. Option D is incorrect as the optic nerve is a bundle of nerve fibers that carries visual information from the retina to the brain and is not related to the concentration of cones on the retina.

Cones Can Be Found Across the Whole __________ Surface, but They