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प्रश्न
Write the name.
The screen with light sensitive cells in human eye.
उत्तर
The screen with light sensitive cells in human eye- Retina
APPEARS IN
संबंधित प्रश्न
Write short notes on the following: Retina
The size of the pupil becomes ______ when you see in dim light.
Explain, why a normal eye is not able to see distinctly the objects placed closer than 25 cm, without putting any strain on the eye.
Describe the anatomy of the human eye.
How does the eye adjust to take account of an increase in brightness?
Name two types of cells in the retina of an eye which respond to light.
State whether the following statement is true or false:
The image formed on our retina is upside-down
Define the term "power of accommodation" of human eye.
Give the scientific names of the following parts of the eye:
muscles which change the shape of the eye-lens.
Give the scientific names of the following parts of the eye:
a clear window at the front of the eye.
How is the amount of light entering the eye controlled?
A person walking in a dark corridor enters into a brightly lit room:
State the effect on the pupil of the eye.
Refraction of light in the eye occurs at:
(a) the lens only
(b) the cornea only
(c) both the cornea and the lens
(d) the pupil
The size of the pupil of the eye is adjusted by:
(a) cornea
(b) ciliary muscles
(c) optic nerve
(d) iris
When is a person said to have developed cataract in his eye? How is the vision of a person having cataract restored?
fill in the following blank with suitable word:
A person is short-sighted if his eyeball is too............Spectacles with a .............lens are needed. A person is long-sighted if his eyeball is too............Spectacles with a ................lens are needed. These focus light rays exactly on to the..........
Which of the following have a wider field of view?
(a) Animals having two eyes on the opposite sides of their head.
(b) Animals having two eyes at the front of their head.
What are the advantages of having two eyes instead of just one?
Name two animals having eyes:
one the sides of the head.
The region in the eyes where the rods and cones are located is the
Given below is certain structure. Write against them its functional acivity.
retina and ……………………….
The figure below compares a part of our eye with a part of a photographic camera.
Name the corresponding parts of the eye the camera shown here that are comparable in function.
Name the following:
Short sightedness.
Give the main function of the following:
Three semicircular canals
What are the functions of tears?
Name the following:
The most sensitive region of the retina.
Give Technical Term:
The fluid which conveys the vibrations of sound in the cochlea and semicircular canals.
State the Function:
Choroid coat in the eye
Draw a scientifically correct labelled diagram of a human eye and answer the questions based on it:
- Name the type of lens in the human eye.
- Name the screen at which the maximum amount of incident light is refracted?
- State the nature of the image formed of the object on the screen inside the eye.
At noon the sun appears white as
Which of the following statements is correct regarding rods and cones in the human eye?
With reference to human eye, answer the following question.
What is aqueous humor?
Arrange and rewrite the term in group in correct order to be in a logical sequence, beginning with the term that is underlined:
Pupil, Aqueous humour, Retina, Vitreous humour.
Match the following:
| Column - I | Column - II | ||
| 1 | Retina | a | Path way of light |
| 2 | Pupil | b | Far point comes closer |
| 3 | Ciliary muscles | c | near point moves away |
| 4 | Myopia | d | Screen of the eye |
| 5 | Hypermetropoia | e | Power of accomodation |
State the functions of the following:
Iris
Which of the following is responsible for the adjustment of the size of pupil?
The thin, transparent extension of sclerotic layer found in front of the lens is ______.
Write the main functional activity of the following structure.
Choroid
