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प्रश्न
Choose the correct answer.
Colour is detected by ____________
पर्याय
rods
cones
pigment
choroids
उत्तर
Colour is detected by cones
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संबंधित प्रश्न
Write the function of retina in human eye.
Give the scientific names of the following parts of the eye:
a hole in the middle of the iris.
Explain the functions of the following parts of the eye:
(i) cornea
(ii) iris
(iii) pupil
(iv) ciliary muscles
(v) eye-lens
After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles:
Left eye : + 2.00 D
Right eye : + 2.25 D
The child is suffering from the defect of vision called:
(a) short-sightedness
(b) long-sightedness
(c) cataract
(d) presbyopia
State the function of each of the following parts of the human eye:
(i) Cornea
(ii) Iris
(iii) Pupil
(iv) Retina
Millions of people of the developing countries are suffering from corneal blindness. This disease can be cured by replacing the defective cornea with the cornea of a donated eye. Your school has organised a campaign in the school and its neighbourhood in order to create awareness about this fact and motivate people to donate their eyes after death. How can you along with your classmates contribute in this noble cause? State the objectives of organising such campaigns in schools.
Define the following:
Blind spot
Give the main function of the following:
Lachrymal glands
Answer the following question.
Write the structure of eye lens and state the role of ciliary muscles in the human eye.
State the Location of:
Lacrimal gland
State the Function:
Conjunctiva
In a relaxed state, the focal length of healthy eyes is _______.
Write the name.
The screen with light sensitive cells in human eye.
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia.
In a myopic eye, the image of the object is formed
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?
At noon the sun appears white as
Write down the names of parts of the eye in the blank spaces shown in the figure.
Match the following
| 1. | Conjunctiva | a. | Coloured part of eye |
| 2. | Cornea | b. | Photosensitive layer |
| 3. | Iris | c. | Refraction |
| 4. | Retina | d. | Protection |
With neat, labeled diagram describe the structure of retina of eye.
Match the following:
| Column - I | Column - II | ||
| 1 | Retina | a | pathway 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 | Hypermetropia | e | power of accommodation |
