Biology · Coordination and Control
Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive practice and topic analytics.
In the mammalian eye, the ‘fovea’ is the center of the visual field where:
- A
Only rods are present
- B
More rods than cones are found
- C
High density of cones occurs, but it has no rods
- D
An equal number of rods and cones
The fovea is the part of the retina with the highest concentration of cones, responsible for sharp central vision and color perception. Since cones are primarily used for detailed vision in bright light, the fovea has no rods, which are responsible for vision in low light conditions.
This is incorrect. Rods are concentrated in the periphery of the retina, not the fovea.
This is incorrect. The fovea has a high density of cones, not rods.
A small oval, yellowish area of the retina lying exactly opposite to the centre of the cornea is named the macula lutea or yellow spot, which has at its middle a shallow depression, the fovea centralis. The fovea centralis has cone cells only. It is devoid of rods and blood vessels. The fovea centralis is the place of the most distinct vision.
This is incorrect. The fovea is solely composed of cones, with no rods present.
Tagged under Biology · Coordination and Control