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प्रश्न
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
उत्तर
Blind spot
Blind spot is the part where the optic nerve passes out of the retina. Photoreceptors are absent from this region
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संबंधित प्रश्न
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to ______.
Name two parts of the eye which refract light rays (or bend light rays).
What is the name of:
the light-sensitive layer in the eye?
Name that part of the eye which is equivalent to the photographic film in a camera.
Fill in the following blank with suitable words:
When light is dim, the pupil becomes................
Fill in the following blank with suitable word:
To bring light from a distant object to a focus on the retina of the eye, the convex eye-lens needs to be made..........
Ciliary muscles of human eye can contract or relax. How does it help in the normal functioning of the eye?
There are two types of light-sensitive cells in the human eye:
Where are they found?
There are two types of light-sensitive cells in the human eye:
To what is each type of cell sensitive?
The term " accommodation" as applied to the eye, refers to its ability to:
(a) control the light intensity falling on the retina
(b) erect the inverted image formed on the retina
(c) vary the focal length of the lens
(d) vary the distance between the lens and retina
The human eye possesses the power of accommodation. This is the power to:
(a) alter the diameter of the pupil as the intensity of light changes
(b) distinguish between lights of different colours
(c) focus on objects at different distances
(d) decide which of the two objects is closer.
Nocturnal animals (animals which sleep during the day and come out at night) tend to have wide pupils and lot of rods in their retinas. Suggest reasons for this.
Fill in the following blank with suitable word:
Having two eyes gives a ................field of view.
Choose the correct answer.
Colour is detected by ____________
What happens to the image distance in the normal human eye when we decrease the distance of an object, say 10 m to 1 m? Justify your answer.
Give Technical Term:
The nutritive layer of the eye which also presents reflection of light.
A student sitting on the last bench can read the letters written on the blackboard but is not able to read the letters written in his text book. Which of the following statements is correct?
With reference to human eye, answer the following question.
What is aqueous humor?
Name the following:
Place of no vision in the retina of the eye.
