Retina
Trending Questions
Q. In the human eye, the visual acuity is highest at
- macula lutea
- optic disc
- fovea centralis
- blind spot
Q.
Compared to retinal, chlorophyll can be described as a pigment that has a
narrow absorption range but low efficiency
wide absorption range but high efficiency
wide absorption range but low efficiency
narrow absorption range but high efficiency
Q.
The region of the vertebrate eye, where the optic nerve passes out of the retina,
is called the
(a) fovea
(b) iris
(c) blind spot
(d) optic chaisma
Q. The retina is most sensitive at
- fovea centralis
- macula lutea
- optic disc
- blind spot
Q. Give difference between blind spot and yellow spot.
Q. The receptors present in the nose are ______ , perceiving the sense of smell and the receptors on the tongue are ______ , for taste.
- olfactory, gustatory
- gustatory, photoreceptor
- olfactory, photoreceptor
- gustatory, olfactory
Q.
Which one of the following is the correct difference between Rod Cells and Cone Cells of our retina?
1
3
2
4
Q. Give a brief account on mechanism of vision.
Q. (a) How do you perceive the colour of an object?
(b) Which part of our body helps us in maintaining the body balance?
(c) How does the eye regulate the amount of light that falls on the retina?
Q. The photosensitive compound in human eye is composed of
- opsin and retinol
- opsin and retinal
- acetylcholine
- guanine and cytosine
Q. Distinguish between choroid and retina.
Q.
Impulses from photoreceptors are carried to the brain by ________.
Facial nerve
Optic nerve
Auditory nerve
Olfactory nerve
Q. Differentiate between rods and cones.
Q. Which one of the following is the correct difference between rod cells and cone cells of our retina?
- Overall function : Rod cells - Vision in poor light ;
Cone cells - Colours vision and detailed vision in bright light - Distribution : Rod cells - More concentrated in the centre of retina ;
Cone cells - Evenly distributed all over retina - Visual acuity : Rod cells -High ; Cone cells - Low
- Visual pigment : Rod cells - Iodopsin ; Cone cells - Rhodopsin
Q. An animal having more cones will be
- more active during night.
- more active during day
- able to see more colours
- both b and c
Q. In human eye, fovea is the central pit of macula lutea where
- only rods are present
- only cones are present
- optic nerve leaves the eye
- cones are more than rods.
Q.
The area of retina in human eye containing only cone cells is
optic disc
tapetum
macula lutea
fovea centralis